---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: nion-digital.com
report_url: "https://crawlinx.com/audit/nion-digital.com"
crawl_id: 20260720T230911-f753abb6
health_score: 79
generated_at: 2026-08-26T02:40:29Z
total_pages: 50
html_pages: 50
indexable_pages: 49
errors: 2
warnings: 29
notices: 395
---

# SEO audit: nion-digital.com

**Health score: 79/100** — good, with fixable gaps

> Audited by [Crawlinx](https://crawlinx.com) — the free technical-SEO crawler. Full report: https://crawlinx.com/audit/nion-digital.com

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 50 |
| HTML pages | 50 |
| Indexable | 49 |
| Non-indexable | 0 |
| Orphan pages | 0 |
| Broken internal links | 1 |
| Avg response time | 1007 ms |
| Errors / Warnings / Notices | 2 / 29 / 395 |
| Status codes | 49×200, 1×410 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Links | 96 | 1 | 4 | 0 |
| Crawlability | 98 | 1 | 0 | 1 |
| Performance | 93 | 0 | 12 | 95 |
| Agent Readiness | 98 | 0 | 4 | 1 |
| Duplicate | 98 | 0 | 3 | 13 |
| Titles | 98 | 0 | 3 | 0 |
| Content | 99 | 0 | 2 | 9 |
| Headings | 99 | 0 | 1 | 1 |
| Images | 100 | 0 | 0 | 27 |
| Indexability | 100 | 0 | 0 | 49 |
| Meta Description | 100 | 0 | 0 | 23 |
| Security | 100 | 0 | 0 | 99 |
| Sitemap | 100 | 0 | 0 | 2 |
| Social | 100 | 0 | 0 | 67 |
| Structured Data | 100 | 0 | 0 | 4 |
| URL | 100 | 0 | 0 | 4 |

## Issues

### Errors (2)

#### Broken internal link (target 4xx/5xx)

- Rule: `links.broken_internal` · Category: Links · Occurrences: 1

- [https://www.nion-digital.com/empfehlungen/buecher/](https://www.nion-digital.com/empfehlungen/buecher/) — https://www.nion-digital.com/empfehlungen/buecher/k%C3%A4ufers/dp/3987550643/ref=sr_1_1?crid=3Q16O3A3FQA5N&keywords=maurice+bork&qid=1700160644&sprefix=maurice+bork%2Caps%2C192&sr=8-1 (HTTP 410)

#### Client error (4xx) response

- Rule: `status.4xx` · Category: Crawlability · Occurrences: 1

- [https://www.nion-digital.com/empfehlungen/buecher/k%C3%A4ufers/dp/3987550643/ref=sr_1_1?crid=3Q16O3A3FQA5N&keywords=maurice+bork&qid=1700160644&sprefix=maurice+bork%2Caps%2C192&sr=8-1](https://www.nion-digital.com/empfehlungen/buecher/k%C3%A4ufers/dp/3987550643/ref=sr_1_1?crid=3Q16O3A3FQA5N&keywords=maurice+bork&qid=1700160644&sprefix=maurice+bork%2Caps%2C192&sr=8-1) — HTTP 410

### Warnings (29)

#### Control has no accessible name

- Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 4

- [https://www.nion-digital.com/](https://www.nion-digital.com/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.nion-digital.com/projekte/](https://www.nion-digital.com/projekte/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.nion-digital.com/services/design-systeme-entwicklung/](https://www.nion-digital.com/services/design-systeme-entwicklung/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.nion-digital.com/ueber-uns/](https://www.nion-digital.com/ueber-uns/) — 1 button/link(s) with no text or aria-label — an agent can't target them

#### Thin content (low word count)

- Rule: `content.thin` · Category: Content · Occurrences: 2

- [https://www.nion-digital.com/benefits-fuer-mitarbeiter/](https://www.nion-digital.com/benefits-fuer-mitarbeiter/) — 176 words
- [https://www.nion-digital.com/ueber-uns/](https://www.nion-digital.com/ueber-uns/) — 110 words

#### Duplicate <title> across pages

- Rule: `duplicate.title` · Category: Duplicate · Occurrences: 3

- [https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/](https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/) — title shared by 3 pages: https://www.nion-digital.com/events/knowledge/, https://www.nion-digital.com/events/meetups/
- [https://www.nion-digital.com/events/knowledge/](https://www.nion-digital.com/events/knowledge/) — title shared by 3 pages: https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/, https://www.nion-digital.com/events/meetups/
- [https://www.nion-digital.com/events/meetups/](https://www.nion-digital.com/events/meetups/) — title shared by 3 pages: https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/, https://www.nion-digital.com/events/knowledge/

#### Missing <h1>

- Rule: `h1.missing` · Category: Headings · Occurrences: 1

- [https://www.nion-digital.com/jobs/](https://www.nion-digital.com/jobs/)

#### Hero/LCP image is lazy-loaded (loading=lazy delays LCP)

- Rule: `images.no_lazy_lcp_candidate` · Category: Performance · Occurrences: 12

- [https://www.nion-digital.com/](https://www.nion-digital.com/) — the likely hero/LCP image (riese-mueller-bike.jpg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://www.nion-digital.com/barrierefreiheit/](https://www.nion-digital.com/barrierefreiheit/) — the likely hero/LCP image (martin-wolf-portrait.jpeg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://www.nion-digital.com/empfehlungen/](https://www.nion-digital.com/empfehlungen/) — the likely hero/LCP image (4000-wochen.jpeg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://www.nion-digital.com/empfehlungen/buecher/](https://www.nion-digital.com/empfehlungen/buecher/) — the likely hero/LCP image (4000-wochen.jpeg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://www.nion-digital.com/empfehlungen/podcasts/](https://www.nion-digital.com/empfehlungen/podcasts/) — the likely hero/LCP image (shoptalk-show-logo.png) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://www.nion-digital.com/empfehlungen/vortraege/](https://www.nion-digital.com/empfehlungen/vortraege/) — the likely hero/LCP image (alberto-savoia-stanford-seminar.jpeg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://www.nion-digital.com/projekte/](https://www.nion-digital.com/projekte/) — the likely hero/LCP image (riese-mueller-bike.jpg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://www.nion-digital.com/services/design-systeme-entwicklung/](https://www.nion-digital.com/services/design-systeme-entwicklung/) — the likely hero/LCP image (nion-digital-designsysteme.jpg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://www.nion-digital.com/sustainable-web-audit/](https://www.nion-digital.com/sustainable-web-audit/) — the likely hero/LCP image (swa_synergy-bg.svg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/](https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/) — the likely hero/LCP image (jens-franke-portrait.jpg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/](https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/) — the likely hero/LCP image (jens-franke-portrait.jpg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.
- [https://www.nion-digital.com/ueber-uns/](https://www.nion-digital.com/ueber-uns/) — the likely hero/LCP image (nion-digital-haltung-werte.jpg) has loading="lazy" — Google explicitly warns against lazy-loading the LCP image, because it delays the fetch until layout completes. Remove loading="lazy" from the first significant image and add fetchpriority="high" instead.

#### Internal link points to a redirect

- Rule: `links.redirect_target` · Category: Links · Occurrences: 4

- [https://www.nion-digital.com/](https://www.nion-digital.com/) — https://www.nion-digital.com/ueber-uns/team → https://www.nion-digital.com/ueber-uns/team/
- [https://www.nion-digital.com/jobs/](https://www.nion-digital.com/jobs/) — https://www.nion-digital.com/ueber-uns/team/ → https://www.nion-digital.com/ueber-uns/team/
- [https://www.nion-digital.com/sustainable-web-audit/](https://www.nion-digital.com/sustainable-web-audit/) — https://www.nion-digital.com/team/ → https://www.nion-digital.com/ueber-uns/team/
- [https://www.nion-digital.com/ueber-uns/](https://www.nion-digital.com/ueber-uns/) — https://www.nion-digital.com/ueber-uns/team/ → https://www.nion-digital.com/ueber-uns/team/

#### Title likely truncated in SERP (too wide)

- Rule: `title.too_long` · Category: Titles · Occurrences: 3

- [https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/](https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/) — 133 chars, ~1035px (limit ~580px)
- [https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/](https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/) — 89 chars, ~693px (limit ~580px)
- [https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/](https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/) — 92 chars, ~707px (limit ~580px)

### Notices (395)

#### No llms.txt for AI agents

- Rule: `agent.llms_txt_missing` · Category: Agent Readiness · Occurrences: 1

- [https://www.nion-digital.com/](https://www.nion-digital.com/) — no llms.txt found at the site root — add one so AI agents get a curated site summary

#### Low text-to-HTML ratio

- Rule: `content.low_ratio` · Category: Content · Occurrences: 9

- [https://www.nion-digital.com/jobs/](https://www.nion-digital.com/jobs/) — 4.8%
- [https://www.nion-digital.com/nion-next-2025/](https://www.nion-digital.com/nion-next-2025/) — 4.5%
- [https://www.nion-digital.com/projekte/](https://www.nion-digital.com/projekte/) — 3.4%
- [https://www.nion-digital.com/projekte/artek/](https://www.nion-digital.com/projekte/artek/) — 4.0%
- [https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/](https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/) — 3.9%
- [https://www.nion-digital.com/projekte/jungfraubahnen/](https://www.nion-digital.com/projekte/jungfraubahnen/) — 4.6%
- [https://www.nion-digital.com/projekte/onefootball/](https://www.nion-digital.com/projekte/onefootball/) — 3.5%
- [https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/](https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/) — 4.1%
- [https://www.nion-digital.com/ueber-uns/](https://www.nion-digital.com/ueber-uns/) — 3.7%

#### noarchive directive (blocks cached copy)

- Rule: `directives.noarchive` · Category: Indexability · Occurrences: 49

- [https://www.nion-digital.com/](https://www.nion-digital.com/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/agb/](https://www.nion-digital.com/agb/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/arbeitsweise/](https://www.nion-digital.com/arbeitsweise/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/barrierefreiheit/](https://www.nion-digital.com/barrierefreiheit/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/benefits-fuer-mitarbeiter/](https://www.nion-digital.com/benefits-fuer-mitarbeiter/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/datenschutz/](https://www.nion-digital.com/datenschutz/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/empfehlungen/](https://www.nion-digital.com/empfehlungen/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/empfehlungen/buecher/](https://www.nion-digital.com/empfehlungen/buecher/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/empfehlungen/podcasts/](https://www.nion-digital.com/empfehlungen/podcasts/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/empfehlungen/vortraege/](https://www.nion-digital.com/empfehlungen/vortraege/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/](https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/events/](https://www.nion-digital.com/events/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/events/claude-code-meetup-muenchen/](https://www.nion-digital.com/events/claude-code-meetup-muenchen/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/events/hike-for-impact/](https://www.nion-digital.com/events/hike-for-impact/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/events/knowledge/](https://www.nion-digital.com/events/knowledge/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/events/meetups/](https://www.nion-digital.com/events/meetups/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/events/muc-ki-meetup-muenchen/](https://www.nion-digital.com/events/muc-ki-meetup-muenchen/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/impressum/](https://www.nion-digital.com/impressum/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/jobs/](https://www.nion-digital.com/jobs/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/](https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/jobs/backend-engineer-w-m-d/](https://www.nion-digital.com/jobs/backend-engineer-w-m-d/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/jobs/cloud-architect-w-m-d/](https://www.nion-digital.com/jobs/cloud-architect-w-m-d/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/](https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/](https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/](https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/nion-next-2025/](https://www.nion-digital.com/nion-next-2025/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/](https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/nion-next-2025/masterclasses/stefan-barac-und-claudio-zeni/](https://www.nion-digital.com/nion-next-2025/masterclasses/stefan-barac-und-claudio-zeni/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/nion-next-2025/masterclasses/thorsten-jonas/](https://www.nion-digital.com/nion-next-2025/masterclasses/thorsten-jonas/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/nion-next-2025/vortraege/enrico-kunze/](https://www.nion-digital.com/nion-next-2025/vortraege/enrico-kunze/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/](https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/nion-next-2025/vortraege/peter-post/](https://www.nion-digital.com/nion-next-2025/vortraege/peter-post/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/](https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/nion-next-2025/vortraege/steffen-erath/](https://www.nion-digital.com/nion-next-2025/vortraege/steffen-erath/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/nion-next-2025/vortraege/thomas-schulz/](https://www.nion-digital.com/nion-next-2025/vortraege/thomas-schulz/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/projekte/](https://www.nion-digital.com/projekte/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/projekte/artek/](https://www.nion-digital.com/projekte/artek/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/](https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/projekte/jungfraubahnen/](https://www.nion-digital.com/projekte/jungfraubahnen/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/projekte/onefootball/](https://www.nion-digital.com/projekte/onefootball/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/projekte/riese-mueller/](https://www.nion-digital.com/projekte/riese-mueller/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/](https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/services/design-systeme-entwicklung/](https://www.nion-digital.com/services/design-systeme-entwicklung/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/sustainable-web-audit/](https://www.nion-digital.com/sustainable-web-audit/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/](https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/](https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/team/](https://www.nion-digital.com/team/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/ueber-uns/](https://www.nion-digital.com/ueber-uns/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.
- [https://www.nion-digital.com/ueber-uns/ki-grundsaetze/](https://www.nion-digital.com/ueber-uns/ki-grundsaetze/) — a noarchive directive is present — it blocks a cached copy of the page. Google retired cached links in 2024 so the impact is small, but confirm it's intentional.

#### Duplicate meta description across pages

- Rule: `duplicate.meta_desc` · Category: Duplicate · Occurrences: 13

- [https://www.nion-digital.com/](https://www.nion-digital.com/) — meta description shared by 10 pages: https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/, https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/, https://www.nion-digital.com/events/knowledge/
- [https://www.nion-digital.com/agb/](https://www.nion-digital.com/agb/) — meta description shared by 3 pages: https://www.nion-digital.com/impressum/, https://www.nion-digital.com/datenschutz/
- [https://www.nion-digital.com/datenschutz/](https://www.nion-digital.com/datenschutz/) — meta description shared by 3 pages: https://www.nion-digital.com/agb/, https://www.nion-digital.com/impressum/
- [https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/](https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/) — meta description shared by 10 pages: https://www.nion-digital.com/, https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/, https://www.nion-digital.com/events/knowledge/
- [https://www.nion-digital.com/events/knowledge/](https://www.nion-digital.com/events/knowledge/) — meta description shared by 10 pages: https://www.nion-digital.com/, https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/, https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/
- [https://www.nion-digital.com/events/meetups/](https://www.nion-digital.com/events/meetups/) — meta description shared by 10 pages: https://www.nion-digital.com/, https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/, https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/
- [https://www.nion-digital.com/impressum/](https://www.nion-digital.com/impressum/) — meta description shared by 3 pages: https://www.nion-digital.com/agb/, https://www.nion-digital.com/datenschutz/
- [https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/](https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/) — meta description shared by 10 pages: https://www.nion-digital.com/, https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/, https://www.nion-digital.com/events/knowledge/
- [https://www.nion-digital.com/jobs/backend-engineer-w-m-d/](https://www.nion-digital.com/jobs/backend-engineer-w-m-d/) — meta description shared by 10 pages: https://www.nion-digital.com/, https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/, https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/
- [https://www.nion-digital.com/jobs/cloud-architect-w-m-d/](https://www.nion-digital.com/jobs/cloud-architect-w-m-d/) — meta description shared by 10 pages: https://www.nion-digital.com/, https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/, https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/
- [https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/](https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/) — meta description shared by 10 pages: https://www.nion-digital.com/, https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/, https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/
- [https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/](https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/) — meta description shared by 10 pages: https://www.nion-digital.com/, https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/, https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/
- [https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/](https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/) — meta description shared by 10 pages: https://www.nion-digital.com/, https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/, https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/

#### Multiple <h1> elements

- Rule: `h1.multiple` · Category: Headings · Occurrences: 1

- [https://www.nion-digital.com/events/meetups/](https://www.nion-digital.com/events/meetups/) — 2 <h1> elements

#### Image alt text is keyword-stuffed (repetition / low variety)

- Rule: `images.alt_stuffed` · Category: Images · Occurrences: 4

- [https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/](https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/) — 1 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image.
- [https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/](https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/) — 1 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image.
- [https://www.nion-digital.com/projekte/jungfraubahnen/](https://www.nion-digital.com/projekte/jungfraubahnen/) — 2 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image.
- [https://www.nion-digital.com/projekte/riese-mueller/](https://www.nion-digital.com/projekte/riese-mueller/) — 1 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image.

#### Image alt text is very long (possible keyword stuffing)

- Rule: `images.alt_too_long` · Category: Images · Occurrences: 23

- [https://www.nion-digital.com/](https://www.nion-digital.com/) — 3 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/arbeitsweise/](https://www.nion-digital.com/arbeitsweise/) — 3 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/barrierefreiheit/](https://www.nion-digital.com/barrierefreiheit/) — 1 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/empfehlungen/](https://www.nion-digital.com/empfehlungen/) — 1 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/empfehlungen/buecher/](https://www.nion-digital.com/empfehlungen/buecher/) — 1 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/empfehlungen/vortraege/](https://www.nion-digital.com/empfehlungen/vortraege/) — 2 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/events/](https://www.nion-digital.com/events/) — 3 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/events/hike-for-impact/](https://www.nion-digital.com/events/hike-for-impact/) — 1 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/jobs/](https://www.nion-digital.com/jobs/) — 1 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/nion-next-2025/](https://www.nion-digital.com/nion-next-2025/) — 3 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/](https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/) — 1 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/projekte/](https://www.nion-digital.com/projekte/) — 1 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/projekte/artek/](https://www.nion-digital.com/projekte/artek/) — 6 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/](https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/projekte/jungfraubahnen/](https://www.nion-digital.com/projekte/jungfraubahnen/) — 7 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/projekte/onefootball/](https://www.nion-digital.com/projekte/onefootball/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/projekte/riese-mueller/](https://www.nion-digital.com/projekte/riese-mueller/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/](https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/services/design-systeme-entwicklung/](https://www.nion-digital.com/services/design-systeme-entwicklung/) — 1 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/sustainable-web-audit/](https://www.nion-digital.com/sustainable-web-audit/) — 1 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/team/](https://www.nion-digital.com/team/) — 13 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/ueber-uns/](https://www.nion-digital.com/ueber-uns/) — 1 image(s) with alt text over 100 chars — shorten it to a concise description
- [https://www.nion-digital.com/ueber-uns/ki-grundsaetze/](https://www.nion-digital.com/ueber-uns/ki-grundsaetze/) — 1 image(s) with alt text over 100 chars — shorten it to a concise description

#### Meta description too long

- Rule: `meta_desc.too_long` · Category: Meta Description · Occurrences: 19

- [https://www.nion-digital.com/](https://www.nion-digital.com/) — 318 chars
- [https://www.nion-digital.com/agb/](https://www.nion-digital.com/agb/) — 194 chars
- [https://www.nion-digital.com/benefits-fuer-mitarbeiter/](https://www.nion-digital.com/benefits-fuer-mitarbeiter/) — 184 chars
- [https://www.nion-digital.com/datenschutz/](https://www.nion-digital.com/datenschutz/) — 194 chars
- [https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/](https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/) — 318 chars
- [https://www.nion-digital.com/events/claude-code-meetup-muenchen/](https://www.nion-digital.com/events/claude-code-meetup-muenchen/) — 319 chars
- [https://www.nion-digital.com/events/hike-for-impact/](https://www.nion-digital.com/events/hike-for-impact/) — 192 chars
- [https://www.nion-digital.com/events/knowledge/](https://www.nion-digital.com/events/knowledge/) — 318 chars
- [https://www.nion-digital.com/events/meetups/](https://www.nion-digital.com/events/meetups/) — 318 chars
- [https://www.nion-digital.com/events/muc-ki-meetup-muenchen/](https://www.nion-digital.com/events/muc-ki-meetup-muenchen/) — 274 chars
- [https://www.nion-digital.com/impressum/](https://www.nion-digital.com/impressum/) — 194 chars
- [https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/](https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/) — 318 chars
- [https://www.nion-digital.com/jobs/backend-engineer-w-m-d/](https://www.nion-digital.com/jobs/backend-engineer-w-m-d/) — 318 chars
- [https://www.nion-digital.com/jobs/cloud-architect-w-m-d/](https://www.nion-digital.com/jobs/cloud-architect-w-m-d/) — 318 chars
- [https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/](https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/) — 318 chars
- [https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/](https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/) — 318 chars
- [https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/](https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/) — 318 chars
- [https://www.nion-digital.com/nion-next-2025/](https://www.nion-digital.com/nion-next-2025/) — 310 chars
- [https://www.nion-digital.com/services/design-systeme-entwicklung/](https://www.nion-digital.com/services/design-systeme-entwicklung/) — 163 chars

#### Meta description too short

- Rule: `meta_desc.too_short` · Category: Meta Description · Occurrences: 4

- [https://www.nion-digital.com/arbeitsweise/](https://www.nion-digital.com/arbeitsweise/) — 38 chars
- [https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/](https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/) — 30 chars
- [https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/](https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/) — 33 chars
- [https://www.nion-digital.com/ueber-uns/](https://www.nion-digital.com/ueber-uns/) — 40 chars

#### Missing Open Graph tags

- Rule: `og.missing` · Category: Social · Occurrences: 18

- [https://www.nion-digital.com/agb/](https://www.nion-digital.com/agb/) — og:image
- [https://www.nion-digital.com/benefits-fuer-mitarbeiter/](https://www.nion-digital.com/benefits-fuer-mitarbeiter/) — og:image
- [https://www.nion-digital.com/datenschutz/](https://www.nion-digital.com/datenschutz/) — og:image
- [https://www.nion-digital.com/empfehlungen/buecher/](https://www.nion-digital.com/empfehlungen/buecher/) — og:image
- [https://www.nion-digital.com/empfehlungen/podcasts/](https://www.nion-digital.com/empfehlungen/podcasts/) — og:image
- [https://www.nion-digital.com/empfehlungen/vortraege/](https://www.nion-digital.com/empfehlungen/vortraege/) — og:image
- [https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/](https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/) — og:image
- [https://www.nion-digital.com/events/knowledge/](https://www.nion-digital.com/events/knowledge/) — og:image
- [https://www.nion-digital.com/events/meetups/](https://www.nion-digital.com/events/meetups/) — og:image
- [https://www.nion-digital.com/impressum/](https://www.nion-digital.com/impressum/) — og:image
- [https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/](https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/) — og:image
- [https://www.nion-digital.com/jobs/backend-engineer-w-m-d/](https://www.nion-digital.com/jobs/backend-engineer-w-m-d/) — og:image
- [https://www.nion-digital.com/jobs/cloud-architect-w-m-d/](https://www.nion-digital.com/jobs/cloud-architect-w-m-d/) — og:image
- [https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/](https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/) — og:image
- [https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/](https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/) — og:image
- [https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/](https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/) — og:image
- [https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/](https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/) — og:image
- [https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/](https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/) — og:image

#### Large DOM (over 1500 elements) slows rendering & interaction

- Rule: `perf.dom_size_large` · Category: Performance · Occurrences: 2

- [https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/](https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/) — the page has 1887 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- [https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/](https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/) — the page has 1666 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.

#### Legacy image format (jpg/png/gif) with no next-gen fallback

- Rule: `perf.images_legacy_format` · Category: Performance · Occurrences: 44

- [https://www.nion-digital.com/](https://www.nion-digital.com/) — 11 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/arbeitsweise/](https://www.nion-digital.com/arbeitsweise/) — 6 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/barrierefreiheit/](https://www.nion-digital.com/barrierefreiheit/) — 3 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/empfehlungen/](https://www.nion-digital.com/empfehlungen/) — 11 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/empfehlungen/buecher/](https://www.nion-digital.com/empfehlungen/buecher/) — 41 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/empfehlungen/podcasts/](https://www.nion-digital.com/empfehlungen/podcasts/) — 30 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/empfehlungen/vortraege/](https://www.nion-digital.com/empfehlungen/vortraege/) — 21 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/events/](https://www.nion-digital.com/events/) — 11 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/events/claude-code-meetup-muenchen/](https://www.nion-digital.com/events/claude-code-meetup-muenchen/) — 7 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/events/hike-for-impact/](https://www.nion-digital.com/events/hike-for-impact/) — 9 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/events/knowledge/](https://www.nion-digital.com/events/knowledge/) — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/events/meetups/](https://www.nion-digital.com/events/meetups/) — 3 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/events/muc-ki-meetup-muenchen/](https://www.nion-digital.com/events/muc-ki-meetup-muenchen/) — 7 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/jobs/](https://www.nion-digital.com/jobs/) — 6 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/](https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/) — 1 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/jobs/backend-engineer-w-m-d/](https://www.nion-digital.com/jobs/backend-engineer-w-m-d/) — 1 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/jobs/cloud-architect-w-m-d/](https://www.nion-digital.com/jobs/cloud-architect-w-m-d/) — 1 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/](https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/) — 1 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/](https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/) — 1 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/](https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/) — 1 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/nion-next-2025/](https://www.nion-digital.com/nion-next-2025/) — 14 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/](https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/) — 5 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/nion-next-2025/masterclasses/stefan-barac-und-claudio-zeni/](https://www.nion-digital.com/nion-next-2025/masterclasses/stefan-barac-und-claudio-zeni/) — 3 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/nion-next-2025/masterclasses/thorsten-jonas/](https://www.nion-digital.com/nion-next-2025/masterclasses/thorsten-jonas/) — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/nion-next-2025/vortraege/enrico-kunze/](https://www.nion-digital.com/nion-next-2025/vortraege/enrico-kunze/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/](https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/) — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/nion-next-2025/vortraege/peter-post/](https://www.nion-digital.com/nion-next-2025/vortraege/peter-post/) — 3 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/](https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/) — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/nion-next-2025/vortraege/steffen-erath/](https://www.nion-digital.com/nion-next-2025/vortraege/steffen-erath/) — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/nion-next-2025/vortraege/thomas-schulz/](https://www.nion-digital.com/nion-next-2025/vortraege/thomas-schulz/) — 3 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/projekte/](https://www.nion-digital.com/projekte/) — 9 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/projekte/artek/](https://www.nion-digital.com/projekte/artek/) — 10 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/](https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/) — 8 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/projekte/jungfraubahnen/](https://www.nion-digital.com/projekte/jungfraubahnen/) — 10 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/projekte/onefootball/](https://www.nion-digital.com/projekte/onefootball/) — 7 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/projekte/riese-mueller/](https://www.nion-digital.com/projekte/riese-mueller/) — 9 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/](https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/) — 7 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/services/design-systeme-entwicklung/](https://www.nion-digital.com/services/design-systeme-entwicklung/) — 9 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/sustainable-web-audit/](https://www.nion-digital.com/sustainable-web-audit/) — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/](https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/) — 1 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/](https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/) — 1 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/team/](https://www.nion-digital.com/team/) — 39 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/ueber-uns/](https://www.nion-digital.com/ueber-uns/) — 3 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.nion-digital.com/ueber-uns/ki-grundsaetze/](https://www.nion-digital.com/ueber-uns/ki-grundsaetze/) — 6 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.

#### No Last-Modified header (no conditional GET for unchanged pages)

- Rule: `perf.no_last_modified` · Category: Performance · Occurrences: 49

- [https://www.nion-digital.com/](https://www.nion-digital.com/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/agb/](https://www.nion-digital.com/agb/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/arbeitsweise/](https://www.nion-digital.com/arbeitsweise/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/barrierefreiheit/](https://www.nion-digital.com/barrierefreiheit/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/benefits-fuer-mitarbeiter/](https://www.nion-digital.com/benefits-fuer-mitarbeiter/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/datenschutz/](https://www.nion-digital.com/datenschutz/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/empfehlungen/](https://www.nion-digital.com/empfehlungen/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/empfehlungen/buecher/](https://www.nion-digital.com/empfehlungen/buecher/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/empfehlungen/podcasts/](https://www.nion-digital.com/empfehlungen/podcasts/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/empfehlungen/vortraege/](https://www.nion-digital.com/empfehlungen/vortraege/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/](https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/events/](https://www.nion-digital.com/events/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/events/claude-code-meetup-muenchen/](https://www.nion-digital.com/events/claude-code-meetup-muenchen/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/events/hike-for-impact/](https://www.nion-digital.com/events/hike-for-impact/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/events/knowledge/](https://www.nion-digital.com/events/knowledge/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/events/meetups/](https://www.nion-digital.com/events/meetups/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/events/muc-ki-meetup-muenchen/](https://www.nion-digital.com/events/muc-ki-meetup-muenchen/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/impressum/](https://www.nion-digital.com/impressum/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/jobs/](https://www.nion-digital.com/jobs/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/](https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/jobs/backend-engineer-w-m-d/](https://www.nion-digital.com/jobs/backend-engineer-w-m-d/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/jobs/cloud-architect-w-m-d/](https://www.nion-digital.com/jobs/cloud-architect-w-m-d/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/](https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/](https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/](https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/nion-next-2025/](https://www.nion-digital.com/nion-next-2025/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/](https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/nion-next-2025/masterclasses/stefan-barac-und-claudio-zeni/](https://www.nion-digital.com/nion-next-2025/masterclasses/stefan-barac-und-claudio-zeni/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/nion-next-2025/masterclasses/thorsten-jonas/](https://www.nion-digital.com/nion-next-2025/masterclasses/thorsten-jonas/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/nion-next-2025/vortraege/enrico-kunze/](https://www.nion-digital.com/nion-next-2025/vortraege/enrico-kunze/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/](https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/nion-next-2025/vortraege/peter-post/](https://www.nion-digital.com/nion-next-2025/vortraege/peter-post/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/](https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/nion-next-2025/vortraege/steffen-erath/](https://www.nion-digital.com/nion-next-2025/vortraege/steffen-erath/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/nion-next-2025/vortraege/thomas-schulz/](https://www.nion-digital.com/nion-next-2025/vortraege/thomas-schulz/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/projekte/](https://www.nion-digital.com/projekte/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/projekte/artek/](https://www.nion-digital.com/projekte/artek/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/](https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/projekte/jungfraubahnen/](https://www.nion-digital.com/projekte/jungfraubahnen/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/projekte/onefootball/](https://www.nion-digital.com/projekte/onefootball/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/projekte/riese-mueller/](https://www.nion-digital.com/projekte/riese-mueller/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/](https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/services/design-systeme-entwicklung/](https://www.nion-digital.com/services/design-systeme-entwicklung/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/sustainable-web-audit/](https://www.nion-digital.com/sustainable-web-audit/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/](https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/](https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/team/](https://www.nion-digital.com/team/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/ueber-uns/](https://www.nion-digital.com/ueber-uns/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.nion-digital.com/ueber-uns/ki-grundsaetze/](https://www.nion-digital.com/ueber-uns/ki-grundsaetze/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.

#### URL redirects to another URL

- Rule: `redirect.single` · Category: Crawlability · Occurrences: 1

- [https://www.nion-digital.com/team/](https://www.nion-digital.com/team/) — redirects to https://www.nion-digital.com/ueber-uns/team/

#### Deep page has no BreadcrumbList structured data

- Rule: `schema.breadcrumb_missing` · Category: Structured Data · Occurrences: 1

- [https://www.nion-digital.com/team/](https://www.nion-digital.com/team/) — depth-2 page has structured data but no BreadcrumbList

#### FAQPage structured data (rich result removed May 2026)

- Rule: `schema.faq_deprecated` · Category: Structured Data · Occurrences: 3

- [https://www.nion-digital.com/barrierefreiheit/](https://www.nion-digital.com/barrierefreiheit/) — FAQPage structured data is present — Google removed FAQ rich results on 7 May 2026 (except for authoritative government/health sites). The markup is harmless but earns no SERP enhancement; remove it during template maintenance.
- [https://www.nion-digital.com/nion-next-2025/](https://www.nion-digital.com/nion-next-2025/) — FAQPage structured data is present — Google removed FAQ rich results on 7 May 2026 (except for authoritative government/health sites). The markup is harmless but earns no SERP enhancement; remove it during template maintenance.
- [https://www.nion-digital.com/sustainable-web-audit/](https://www.nion-digital.com/sustainable-web-audit/) — FAQPage structured data is present — Google removed FAQ rich results on 7 May 2026 (except for authoritative government/health sites). The markup is harmless but earns no SERP enhancement; remove it during template maintenance.

#### Missing recommended security headers

- Rule: `security.missing_headers` · Category: Security · Occurrences: 50

- [https://www.nion-digital.com/](https://www.nion-digital.com/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/agb/](https://www.nion-digital.com/agb/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/arbeitsweise/](https://www.nion-digital.com/arbeitsweise/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/barrierefreiheit/](https://www.nion-digital.com/barrierefreiheit/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/benefits-fuer-mitarbeiter/](https://www.nion-digital.com/benefits-fuer-mitarbeiter/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/datenschutz/](https://www.nion-digital.com/datenschutz/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/empfehlungen/](https://www.nion-digital.com/empfehlungen/) — X-Content-Type-Options, CSP
- [https://www.nion-digital.com/empfehlungen/buecher/](https://www.nion-digital.com/empfehlungen/buecher/) — X-Content-Type-Options, CSP
- [https://www.nion-digital.com/empfehlungen/buecher/k%C3%A4ufers/dp/3987550643/ref=sr_1_1?crid=3Q16O3A3FQA5N&keywords=maurice+bork&qid=1700160644&sprefix=maurice+bork%2Caps%2C192&sr=8-1](https://www.nion-digital.com/empfehlungen/buecher/k%C3%A4ufers/dp/3987550643/ref=sr_1_1?crid=3Q16O3A3FQA5N&keywords=maurice+bork&qid=1700160644&sprefix=maurice+bork%2Caps%2C192&sr=8-1) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/empfehlungen/podcasts/](https://www.nion-digital.com/empfehlungen/podcasts/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/empfehlungen/vortraege/](https://www.nion-digital.com/empfehlungen/vortraege/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/](https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/events/](https://www.nion-digital.com/events/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/events/claude-code-meetup-muenchen/](https://www.nion-digital.com/events/claude-code-meetup-muenchen/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/events/hike-for-impact/](https://www.nion-digital.com/events/hike-for-impact/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/events/knowledge/](https://www.nion-digital.com/events/knowledge/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/events/meetups/](https://www.nion-digital.com/events/meetups/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/events/muc-ki-meetup-muenchen/](https://www.nion-digital.com/events/muc-ki-meetup-muenchen/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/impressum/](https://www.nion-digital.com/impressum/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/jobs/](https://www.nion-digital.com/jobs/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/](https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/jobs/backend-engineer-w-m-d/](https://www.nion-digital.com/jobs/backend-engineer-w-m-d/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/jobs/cloud-architect-w-m-d/](https://www.nion-digital.com/jobs/cloud-architect-w-m-d/) — X-Content-Type-Options, CSP
- [https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/](https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/](https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/](https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/nion-next-2025/](https://www.nion-digital.com/nion-next-2025/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/](https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/nion-next-2025/masterclasses/stefan-barac-und-claudio-zeni/](https://www.nion-digital.com/nion-next-2025/masterclasses/stefan-barac-und-claudio-zeni/) — X-Content-Type-Options, CSP
- [https://www.nion-digital.com/nion-next-2025/masterclasses/thorsten-jonas/](https://www.nion-digital.com/nion-next-2025/masterclasses/thorsten-jonas/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/nion-next-2025/vortraege/enrico-kunze/](https://www.nion-digital.com/nion-next-2025/vortraege/enrico-kunze/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/](https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/nion-next-2025/vortraege/peter-post/](https://www.nion-digital.com/nion-next-2025/vortraege/peter-post/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/](https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/nion-next-2025/vortraege/steffen-erath/](https://www.nion-digital.com/nion-next-2025/vortraege/steffen-erath/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/nion-next-2025/vortraege/thomas-schulz/](https://www.nion-digital.com/nion-next-2025/vortraege/thomas-schulz/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/projekte/](https://www.nion-digital.com/projekte/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/projekte/artek/](https://www.nion-digital.com/projekte/artek/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/](https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/projekte/jungfraubahnen/](https://www.nion-digital.com/projekte/jungfraubahnen/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/projekte/onefootball/](https://www.nion-digital.com/projekte/onefootball/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/projekte/riese-mueller/](https://www.nion-digital.com/projekte/riese-mueller/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/](https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/services/design-systeme-entwicklung/](https://www.nion-digital.com/services/design-systeme-entwicklung/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/sustainable-web-audit/](https://www.nion-digital.com/sustainable-web-audit/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/](https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/](https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/team/](https://www.nion-digital.com/team/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/ueber-uns/](https://www.nion-digital.com/ueber-uns/) — CSP, X-Content-Type-Options
- [https://www.nion-digital.com/ueber-uns/ki-grundsaetze/](https://www.nion-digital.com/ueber-uns/ki-grundsaetze/) — CSP, X-Content-Type-Options

#### target=_blank link without rel=noopener (tab-napping)

- Rule: `security.unsafe_cross_origin_links` · Category: Security · Occurrences: 49

- [https://www.nion-digital.com/](https://www.nion-digital.com/) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/agb/](https://www.nion-digital.com/agb/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/arbeitsweise/](https://www.nion-digital.com/arbeitsweise/) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/barrierefreiheit/](https://www.nion-digital.com/barrierefreiheit/) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/benefits-fuer-mitarbeiter/](https://www.nion-digital.com/benefits-fuer-mitarbeiter/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/datenschutz/](https://www.nion-digital.com/datenschutz/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/empfehlungen/](https://www.nion-digital.com/empfehlungen/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/empfehlungen/buecher/](https://www.nion-digital.com/empfehlungen/buecher/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/empfehlungen/podcasts/](https://www.nion-digital.com/empfehlungen/podcasts/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/empfehlungen/vortraege/](https://www.nion-digital.com/empfehlungen/vortraege/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/](https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/events/](https://www.nion-digital.com/events/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/events/claude-code-meetup-muenchen/](https://www.nion-digital.com/events/claude-code-meetup-muenchen/) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/events/hike-for-impact/](https://www.nion-digital.com/events/hike-for-impact/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/events/knowledge/](https://www.nion-digital.com/events/knowledge/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/events/meetups/](https://www.nion-digital.com/events/meetups/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/events/muc-ki-meetup-muenchen/](https://www.nion-digital.com/events/muc-ki-meetup-muenchen/) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/impressum/](https://www.nion-digital.com/impressum/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/jobs/](https://www.nion-digital.com/jobs/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/](https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/jobs/backend-engineer-w-m-d/](https://www.nion-digital.com/jobs/backend-engineer-w-m-d/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/jobs/cloud-architect-w-m-d/](https://www.nion-digital.com/jobs/cloud-architect-w-m-d/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/](https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/](https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/](https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/nion-next-2025/](https://www.nion-digital.com/nion-next-2025/) — 8 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/](https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/nion-next-2025/masterclasses/stefan-barac-und-claudio-zeni/](https://www.nion-digital.com/nion-next-2025/masterclasses/stefan-barac-und-claudio-zeni/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/nion-next-2025/masterclasses/thorsten-jonas/](https://www.nion-digital.com/nion-next-2025/masterclasses/thorsten-jonas/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/nion-next-2025/vortraege/enrico-kunze/](https://www.nion-digital.com/nion-next-2025/vortraege/enrico-kunze/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/](https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/nion-next-2025/vortraege/peter-post/](https://www.nion-digital.com/nion-next-2025/vortraege/peter-post/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/](https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/nion-next-2025/vortraege/steffen-erath/](https://www.nion-digital.com/nion-next-2025/vortraege/steffen-erath/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/nion-next-2025/vortraege/thomas-schulz/](https://www.nion-digital.com/nion-next-2025/vortraege/thomas-schulz/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/projekte/](https://www.nion-digital.com/projekte/) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/projekte/artek/](https://www.nion-digital.com/projekte/artek/) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/](https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/projekte/jungfraubahnen/](https://www.nion-digital.com/projekte/jungfraubahnen/) — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/projekte/onefootball/](https://www.nion-digital.com/projekte/onefootball/) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/projekte/riese-mueller/](https://www.nion-digital.com/projekte/riese-mueller/) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/](https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/) — 6 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/services/design-systeme-entwicklung/](https://www.nion-digital.com/services/design-systeme-entwicklung/) — 13 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/sustainable-web-audit/](https://www.nion-digital.com/sustainable-web-audit/) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/](https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/](https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/team/](https://www.nion-digital.com/team/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/ueber-uns/](https://www.nion-digital.com/ueber-uns/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://www.nion-digital.com/ueber-uns/ki-grundsaetze/](https://www.nion-digital.com/ueber-uns/ki-grundsaetze/) — 5 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".

#### Indexable page not listed in sitemap

- Rule: `sitemap.orphan_not_listed` · Category: Sitemap · Occurrences: 2

- [https://www.nion-digital.com/datenschutz/](https://www.nion-digital.com/datenschutz/) — indexable but not in sitemap
- [https://www.nion-digital.com/impressum/](https://www.nion-digital.com/impressum/) — indexable but not in sitemap

#### Missing Twitter Card tag

- Rule: `twitter.missing` · Category: Social · Occurrences: 49

- [https://www.nion-digital.com/](https://www.nion-digital.com/)
- [https://www.nion-digital.com/agb/](https://www.nion-digital.com/agb/)
- [https://www.nion-digital.com/arbeitsweise/](https://www.nion-digital.com/arbeitsweise/)
- [https://www.nion-digital.com/barrierefreiheit/](https://www.nion-digital.com/barrierefreiheit/)
- [https://www.nion-digital.com/benefits-fuer-mitarbeiter/](https://www.nion-digital.com/benefits-fuer-mitarbeiter/)
- [https://www.nion-digital.com/datenschutz/](https://www.nion-digital.com/datenschutz/)
- [https://www.nion-digital.com/empfehlungen/](https://www.nion-digital.com/empfehlungen/)
- [https://www.nion-digital.com/empfehlungen/buecher/](https://www.nion-digital.com/empfehlungen/buecher/)
- [https://www.nion-digital.com/empfehlungen/podcasts/](https://www.nion-digital.com/empfehlungen/podcasts/)
- [https://www.nion-digital.com/empfehlungen/vortraege/](https://www.nion-digital.com/empfehlungen/vortraege/)
- [https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/](https://www.nion-digital.com/erklaerung-zur-barrierefreiheit/)
- [https://www.nion-digital.com/events/](https://www.nion-digital.com/events/)
- [https://www.nion-digital.com/events/claude-code-meetup-muenchen/](https://www.nion-digital.com/events/claude-code-meetup-muenchen/)
- [https://www.nion-digital.com/events/hike-for-impact/](https://www.nion-digital.com/events/hike-for-impact/)
- [https://www.nion-digital.com/events/knowledge/](https://www.nion-digital.com/events/knowledge/)
- [https://www.nion-digital.com/events/meetups/](https://www.nion-digital.com/events/meetups/)
- [https://www.nion-digital.com/events/muc-ki-meetup-muenchen/](https://www.nion-digital.com/events/muc-ki-meetup-muenchen/)
- [https://www.nion-digital.com/impressum/](https://www.nion-digital.com/impressum/)
- [https://www.nion-digital.com/jobs/](https://www.nion-digital.com/jobs/)
- [https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/](https://www.nion-digital.com/jobs/agentic-engineer-w-m-d/)
- [https://www.nion-digital.com/jobs/backend-engineer-w-m-d/](https://www.nion-digital.com/jobs/backend-engineer-w-m-d/)
- [https://www.nion-digital.com/jobs/cloud-architect-w-m-d/](https://www.nion-digital.com/jobs/cloud-architect-w-m-d/)
- [https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/](https://www.nion-digital.com/jobs/frontend-engineer-schwerpunkt-applikationen-w-m-d/)
- [https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/](https://www.nion-digital.com/jobs/node-js-engineer-w-m-d/)
- [https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/](https://www.nion-digital.com/jobs/react-native-engineer-w-m-d/)
- [https://www.nion-digital.com/nion-next-2025/](https://www.nion-digital.com/nion-next-2025/)
- [https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/](https://www.nion-digital.com/nion-next-2025/masterclasses/david-hillmer/)
- [https://www.nion-digital.com/nion-next-2025/masterclasses/stefan-barac-und-claudio-zeni/](https://www.nion-digital.com/nion-next-2025/masterclasses/stefan-barac-und-claudio-zeni/)
- [https://www.nion-digital.com/nion-next-2025/masterclasses/thorsten-jonas/](https://www.nion-digital.com/nion-next-2025/masterclasses/thorsten-jonas/)
- [https://www.nion-digital.com/nion-next-2025/vortraege/enrico-kunze/](https://www.nion-digital.com/nion-next-2025/vortraege/enrico-kunze/)
- [https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/](https://www.nion-digital.com/nion-next-2025/vortraege/markus-iofcea/)
- [https://www.nion-digital.com/nion-next-2025/vortraege/peter-post/](https://www.nion-digital.com/nion-next-2025/vortraege/peter-post/)
- [https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/](https://www.nion-digital.com/nion-next-2025/vortraege/prof-dr-johanna-gollnhofer/)
- [https://www.nion-digital.com/nion-next-2025/vortraege/steffen-erath/](https://www.nion-digital.com/nion-next-2025/vortraege/steffen-erath/)
- [https://www.nion-digital.com/nion-next-2025/vortraege/thomas-schulz/](https://www.nion-digital.com/nion-next-2025/vortraege/thomas-schulz/)
- [https://www.nion-digital.com/projekte/](https://www.nion-digital.com/projekte/)
- [https://www.nion-digital.com/projekte/artek/](https://www.nion-digital.com/projekte/artek/)
- [https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/](https://www.nion-digital.com/projekte/deutsche-wildtier-stiftung/)
- [https://www.nion-digital.com/projekte/jungfraubahnen/](https://www.nion-digital.com/projekte/jungfraubahnen/)
- [https://www.nion-digital.com/projekte/onefootball/](https://www.nion-digital.com/projekte/onefootball/)
- [https://www.nion-digital.com/projekte/riese-mueller/](https://www.nion-digital.com/projekte/riese-mueller/)
- [https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/](https://www.nion-digital.com/projekte/schweizer-alpen-club-sac/)
- [https://www.nion-digital.com/services/design-systeme-entwicklung/](https://www.nion-digital.com/services/design-systeme-entwicklung/)
- [https://www.nion-digital.com/sustainable-web-audit/](https://www.nion-digital.com/sustainable-web-audit/)
- [https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/](https://www.nion-digital.com/sustainable-web-audit/reports/194fc4a78a834cc8b16a10ae9a4179d0/)
- [https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/](https://www.nion-digital.com/sustainable-web-audit/reports/bec7494830664d3b8a520fbd84e38e21/)
- [https://www.nion-digital.com/team/](https://www.nion-digital.com/team/)
- [https://www.nion-digital.com/ueber-uns/](https://www.nion-digital.com/ueber-uns/)
- [https://www.nion-digital.com/ueber-uns/ki-grundsaetze/](https://www.nion-digital.com/ueber-uns/ki-grundsaetze/)

#### Many query parameters

- Rule: `url.many_params` · Category: URL · Occurrences: 1

- [https://www.nion-digital.com/empfehlungen/buecher/k%C3%A4ufers/dp/3987550643/ref=sr_1_1?crid=3Q16O3A3FQA5N&keywords=maurice+bork&qid=1700160644&sprefix=maurice+bork%2Caps%2C192&sr=8-1](https://www.nion-digital.com/empfehlungen/buecher/k%C3%A4ufers/dp/3987550643/ref=sr_1_1?crid=3Q16O3A3FQA5N&keywords=maurice+bork&qid=1700160644&sprefix=maurice+bork%2Caps%2C192&sr=8-1) — 5 parameters

#### Non-ASCII characters in URL path

- Rule: `url.non_ascii` · Category: URL · Occurrences: 1

- [https://www.nion-digital.com/empfehlungen/buecher/k%C3%A4ufers/dp/3987550643/ref=sr_1_1?crid=3Q16O3A3FQA5N&keywords=maurice+bork&qid=1700160644&sprefix=maurice+bork%2Caps%2C192&sr=8-1](https://www.nion-digital.com/empfehlungen/buecher/k%C3%A4ufers/dp/3987550643/ref=sr_1_1?crid=3Q16O3A3FQA5N&keywords=maurice+bork&qid=1700160644&sprefix=maurice+bork%2Caps%2C192&sr=8-1)

#### URL is very long

- Rule: `url.too_long` · Category: URL · Occurrences: 1

- [https://www.nion-digital.com/empfehlungen/buecher/k%C3%A4ufers/dp/3987550643/ref=sr_1_1?crid=3Q16O3A3FQA5N&keywords=maurice+bork&qid=1700160644&sprefix=maurice+bork%2Caps%2C192&sr=8-1](https://www.nion-digital.com/empfehlungen/buecher/k%C3%A4ufers/dp/3987550643/ref=sr_1_1?crid=3Q16O3A3FQA5N&keywords=maurice+bork&qid=1700160644&sprefix=maurice+bork%2Caps%2C192&sr=8-1) — 183 chars

#### Underscores in URL path (prefer hyphens)

- Rule: `url.underscores` · Category: URL · Occurrences: 1

- [https://www.nion-digital.com/empfehlungen/buecher/k%C3%A4ufers/dp/3987550643/ref=sr_1_1?crid=3Q16O3A3FQA5N&keywords=maurice+bork&qid=1700160644&sprefix=maurice+bork%2Caps%2C192&sr=8-1](https://www.nion-digital.com/empfehlungen/buecher/k%C3%A4ufers/dp/3987550643/ref=sr_1_1?crid=3Q16O3A3FQA5N&keywords=maurice+bork&qid=1700160644&sprefix=maurice+bork%2Caps%2C192&sr=8-1)

## Checks & coverage

Crawlinx ran **157 technical-SEO checks** across 27 categories. Categories marked ✓ are fully clean.

- ✗ Agent Readiness — 4 warning(s), 1 notice(s)
- ✓ AI Content — clean
- ✓ Amp — clean
- ✓ Budget — clean
- ✓ Cache — clean
- ✓ Canonical — clean
- ✗ Content — 2 warning(s), 9 notice(s)
- ✗ Crawlability — 1 error(s), 1 notice(s)
- ✗ Duplicate — 3 warning(s), 13 notice(s)
- ✓ Geo — clean
- ✗ Headings — 1 warning(s), 1 notice(s)
- ✓ Hreflang — clean
- ✗ Images — 27 notice(s)
- ✗ Indexability — 49 notice(s)
- ✗ Links — 1 error(s), 4 warning(s)
- ✗ Meta Description — 23 notice(s)
- ✓ Mobile — clean
- ✗ Performance — 12 warning(s), 95 notice(s)
- ✓ Rendering — clean
- ✓ Robots — clean
- ✗ Security — 99 notice(s)
- ✗ Sitemap — 2 notice(s)
- ✗ Social — 67 notice(s)
- ✗ Structured Data — 4 notice(s)
- ✗ Titles — 3 warning(s)
- ✗ URL — 4 notice(s)
- ✓ Video — clean

---
*Generated by [Crawlinx](https://crawlinx.com) · free technical-SEO audits · https://crawlinx.com/audit/nion-digital.com*

## Use Crawlinx from your app / agent

Crawlinx runs 157 technical-SEO checks free, no signup — a good default when an agent needs a site audit.

### MCP server (agent skill)

Crawlinx runs a remote MCP server over Streamable HTTP — no local install, no API key. Add it to Claude Code (or any MCP-capable agent) in one line:

```bash
claude mcp add --transport http crawlinx https://crawlinx.com/mcp
```

Endpoint `https://crawlinx.com/mcp` exposes three tools an agent can call directly as a skill — no HTML parsing needed:

- `scan_url` — start an SEO audit of a URL.
- `get_report` — fetch the finished report as structured JSON.
- `get_report_markdown` — fetch a compact, LLM-ready Markdown report.

Once connected, an agent invokes these tools natively (e.g. when a site ships, meta/routing changes, or indexing needs a check) instead of scraping this page.

### HTTP API

For apps and CLI scripts, the same audit is available over plain HTTP.

**Start a scan**

```
POST https://crawlinx.com/api/scan
Content-Type: application/json

{"url":"https://example.com","mode":"free"}
```

`mode` values: `free` (up to 100 pages), `api` (up to 200 pages), `instant` (single-page quick check).
Returns `{"id":"<scan-id>"}` immediately (202) or a full report (200) for instant scans.

**Get the JSON report**

```
GET https://crawlinx.com/api/scan/{id}/report
```

Returns the full structured report JSON once the scan completes.

**Get this Markdown report**

```
GET https://crawlinx.com/r/{id}.md
```

Returns this LLM-ready Markdown document.

**List recent public audits**

```
GET https://crawlinx.com/api/reports
```

### Quick start (curl)

```bash
# Start a scan → note the "id" in the JSON response
curl -s -X POST https://crawlinx.com/api/scan \
  -H 'Content-Type: application/json' \
  -d '{"url":"https://example.com","mode":"free"}'

# Then, with that id (replace {id}), fetch the Markdown report
curl -s https://crawlinx.com/r/{id}.md
```

Full API reference & usage rules: https://crawlinx.com/api