---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: tuner4tronic.com
report_url: "https://crawlinx.com/audit/tuner4tronic.com"
crawl_id: 20260728T014009-5cd55d22
health_score: 67
generated_at: 2026-07-29T00:39:39Z
total_pages: 18
html_pages: 18
indexable_pages: 12
errors: 0
warnings: 119
notices: 102
---

# SEO audit: tuner4tronic.com

**Health score: 67/100** — needs attention

> Audited by [Crawlinx](https://crawlinx.com) — the free technical-SEO crawler. Full report: https://crawlinx.com/audit/tuner4tronic.com

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 18 |
| HTML pages | 18 |
| Indexable | 12 |
| Non-indexable | 0 |
| Orphan pages | 0 |
| Broken internal links | 0 |
| Avg response time | 928 ms |
| Errors / Warnings / Notices | 0 / 119 / 102 |
| Status codes | 12×200, 6×308 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Duplicate | 65 | 0 | 21 | 0 |
| Agent Readiness | 80 | 0 | 12 | 13 |
| Canonical | 80 | 0 | 12 | 0 |
| Crawlability | 80 | 0 | 12 | 0 |
| Images | 80 | 0 | 12 | 2 |
| Meta Description | 80 | 0 | 12 | 0 |
| Performance | 80 | 0 | 12 | 24 |
| Security | 80 | 0 | 12 | 20 |
| Links | 90 | 0 | 6 | 2 |
| Content | 93 | 0 | 4 | 4 |
| Headings | 93 | 0 | 4 | 0 |
| Robots | 100 | 0 | 0 | 1 |
| Social | 100 | 0 | 0 | 24 |
| Structured Data | 100 | 0 | 0 | 12 |

## Issues

### Warnings (119)

#### Control has no accessible name

- Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 12

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html) — 1 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html) — 1 button/link(s) with no text or aria-label — an agent can't target them

#### Missing canonical tag

- Rule: `canonical.missing` · Category: Canonical · Occurrences: 12

- [https://tuner4tronic.com/](https://tuner4tronic.com/)
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html)
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html)
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html)
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html)
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html)
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/)
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html)
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html)
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html)
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html)
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html)

#### Thin content (low word count)

- Rule: `content.thin` · Category: Content · Occurrences: 4

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — 134 words
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html) — 54 words
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — 134 words
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html) — 54 words

#### Duplicate page content

- Rule: `duplicate.content` · Category: Duplicate · Occurrences: 8

- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html) — content shared by 2 pages: https://www.tuner4tronic.com/docu/index.html
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html) — content shared by 2 pages: https://www.tuner4tronic.com/oss.html
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html) — content shared by 2 pages: https://www.tuner4tronic.com/privacy.html
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html) — content shared by 2 pages: https://www.tuner4tronic.com/terms.html
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html) — content shared by 2 pages: https://tuner4tronic.com/docu/index.html
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html) — content shared by 2 pages: https://tuner4tronic.com/oss.html
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html) — content shared by 2 pages: https://tuner4tronic.com/privacy.html
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html) — content shared by 2 pages: https://tuner4tronic.com/terms.html

#### Homepage duplicated across protocol/host variants (no redirect)

- Rule: `duplicate.protocol_host` · Category: Duplicate · Occurrences: 1

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — https://www.tuner4tronic.com/ serves the same homepage content with a 200 and no redirect — Google sees a duplicate. Pick one canonical host/scheme and 301-redirect the others.

#### Duplicate <title> across pages

- Rule: `duplicate.title` · Category: Duplicate · Occurrences: 12

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — title shared by 2 pages: https://www.tuner4tronic.com/
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html) — title shared by 10 pages: https://tuner4tronic.com/imprint.html, https://tuner4tronic.com/terms.html, https://tuner4tronic.com/privacy.html
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html) — title shared by 10 pages: https://tuner4tronic.com/docu/index.html, https://tuner4tronic.com/terms.html, https://tuner4tronic.com/privacy.html
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html) — title shared by 10 pages: https://tuner4tronic.com/docu/index.html, https://tuner4tronic.com/imprint.html, https://tuner4tronic.com/terms.html
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html) — title shared by 10 pages: https://tuner4tronic.com/docu/index.html, https://tuner4tronic.com/imprint.html, https://tuner4tronic.com/terms.html
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html) — title shared by 10 pages: https://tuner4tronic.com/docu/index.html, https://tuner4tronic.com/imprint.html, https://tuner4tronic.com/privacy.html
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — title shared by 2 pages: https://tuner4tronic.com/
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html) — title shared by 10 pages: https://tuner4tronic.com/docu/index.html, https://tuner4tronic.com/imprint.html, https://tuner4tronic.com/terms.html
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html) — title shared by 10 pages: https://tuner4tronic.com/docu/index.html, https://tuner4tronic.com/imprint.html, https://tuner4tronic.com/terms.html
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html) — title shared by 10 pages: https://tuner4tronic.com/docu/index.html, https://tuner4tronic.com/imprint.html, https://tuner4tronic.com/terms.html
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html) — title shared by 10 pages: https://tuner4tronic.com/docu/index.html, https://tuner4tronic.com/imprint.html, https://tuner4tronic.com/terms.html
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html) — title shared by 10 pages: https://tuner4tronic.com/docu/index.html, https://tuner4tronic.com/imprint.html, https://tuner4tronic.com/terms.html

#### Missing <h1>

- Rule: `h1.missing` · Category: Headings · Occurrences: 4

- [https://tuner4tronic.com/](https://tuner4tronic.com/)
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html)
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/)
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html)

#### Content-Type header doesn't match the actual content

- Rule: `headers.content_type_mismatch` · Category: Security · Occurrences: 12

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".

#### Images missing alt text

- Rule: `images.missing_alt` · Category: Images · Occurrences: 12

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — 3 of 3 images missing alt
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html) — 1 of 1 images missing alt
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html) — 1 of 1 images missing alt
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html) — 1 of 1 images missing alt
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html) — 1 of 1 images missing alt
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html) — 1 of 1 images missing alt
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — 3 of 3 images missing alt
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html) — 1 of 1 images missing alt
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html) — 1 of 1 images missing alt
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html) — 1 of 1 images missing alt
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html) — 1 of 1 images missing alt
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html) — 1 of 1 images missing alt

#### Internal link points to a redirect

- Rule: `links.redirect_target` · Category: Links · Occurrences: 6

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — https://tuner4tronic.com/ddstore → http://tuner4tronic.com/ddstore/
- [https://tuner4tronic.com/](https://tuner4tronic.com/) — https://tuner4tronic.com/ledmodulestore → http://tuner4tronic.com/ledmodulestore/
- [https://tuner4tronic.com/](https://tuner4tronic.com/) — https://tuner4tronic.com/t4t → http://tuner4tronic.com/t4t/
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — https://www.tuner4tronic.com/ddstore → http://www.tuner4tronic.com/ddstore/
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — https://www.tuner4tronic.com/ledmodulestore → http://www.tuner4tronic.com/ledmodulestore/
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — https://www.tuner4tronic.com/t4t → http://www.tuner4tronic.com/t4t/

#### Missing meta description

- Rule: `meta_desc.missing` · Category: Meta Description · Occurrences: 12

- [https://tuner4tronic.com/](https://tuner4tronic.com/)
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html)
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html)
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html)
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html)
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html)
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/)
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html)
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html)
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html)
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html)
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html)

#### Render-blocking script in <head> (no defer/async)

- Rule: `perf.render_blocking` · Category: Performance · Occurrences: 12

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html) — 3 render-blocking <script> in <head> (add defer/async or use type=module)

#### Redirect chain (multiple hops)

- Rule: `redirect.chain` · Category: Crawlability · Occurrences: 6

- [https://tuner4tronic.com/ddstore](https://tuner4tronic.com/ddstore) — 10 hops ending at http://tuner4tronic.com/ddstore/
- [https://tuner4tronic.com/ledmodulestore](https://tuner4tronic.com/ledmodulestore) — 10 hops ending at http://tuner4tronic.com/ledmodulestore/
- [https://tuner4tronic.com/t4t](https://tuner4tronic.com/t4t) — 10 hops ending at http://tuner4tronic.com/t4t/
- [https://www.tuner4tronic.com/ddstore](https://www.tuner4tronic.com/ddstore) — 10 hops ending at http://www.tuner4tronic.com/ddstore/
- [https://www.tuner4tronic.com/ledmodulestore](https://www.tuner4tronic.com/ledmodulestore) — 10 hops ending at http://www.tuner4tronic.com/ledmodulestore/
- [https://www.tuner4tronic.com/t4t](https://www.tuner4tronic.com/t4t) — 10 hops ending at http://www.tuner4tronic.com/t4t/

#### Non-200 final status

- Rule: `status.non_200` · Category: Crawlability · Occurrences: 6

- [https://tuner4tronic.com/ddstore](https://tuner4tronic.com/ddstore) — HTTP 308
- [https://tuner4tronic.com/ledmodulestore](https://tuner4tronic.com/ledmodulestore) — HTTP 308
- [https://tuner4tronic.com/t4t](https://tuner4tronic.com/t4t) — HTTP 308
- [https://www.tuner4tronic.com/ddstore](https://www.tuner4tronic.com/ddstore) — HTTP 308
- [https://www.tuner4tronic.com/ledmodulestore](https://www.tuner4tronic.com/ledmodulestore) — HTTP 308
- [https://www.tuner4tronic.com/t4t](https://www.tuner4tronic.com/t4t) — HTTP 308

### Notices (102)

#### No llms.txt for AI agents

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

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — no llms.txt found at the site root — add one so AI agents get a curated site summary

#### No main landmark for AI agents

- Rule: `agent.no_main_landmark` · Category: Agent Readiness · Occurrences: 12

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — add a <main> element (or role=main) around the primary content
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html) — add a <main> element (or role=main) around the primary content
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html) — add a <main> element (or role=main) around the primary content
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html) — add a <main> element (or role=main) around the primary content
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html) — add a <main> element (or role=main) around the primary content
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html) — add a <main> element (or role=main) around the primary content
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — add a <main> element (or role=main) around the primary content
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html) — add a <main> element (or role=main) around the primary content
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html) — add a <main> element (or role=main) around the primary content
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html) — add a <main> element (or role=main) around the primary content
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html) — add a <main> element (or role=main) around the primary content
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html) — add a <main> element (or role=main) around the primary content

#### Main text is hard to read (low Flesch Reading Ease)

- Rule: `content.readability_poor` · Category: Content · Occurrences: 4

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — this page reads as difficult (Flesch Reading Ease 32, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html) — this page reads as difficult (Flesch Reading Ease 46, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — this page reads as difficult (Flesch Reading Ease 32, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html) — this page reads as difficult (Flesch Reading Ease 46, below 50) — long sentences and multi-syllable words make it hard to scan. Shorten sentences and prefer plainer words to widen your audience. Density can be legitimate for expert, technical or legal content, so judge it against who the page is for.

#### Likely hero image lacks fetchpriority=high

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

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — the likely hero/LCP image (inv_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html) — the likely hero/LCP image (inv_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html) — the likely hero/LCP image (inv_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html) — the likely hero/LCP image (inv_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html) — the likely hero/LCP image (inv_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html) — the likely hero/LCP image (inv_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — the likely hero/LCP image (inv_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html) — the likely hero/LCP image (inv_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html) — the likely hero/LCP image (inv_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html) — the likely hero/LCP image (inv_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html) — the likely hero/LCP image (inv_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html) — the likely hero/LCP image (inv_logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.

#### Images without width/height (layout shift / CLS)

- Rule: `images.missing_dimensions` · Category: Images · Occurrences: 2

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — 1 of 3 images without width/height
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — 1 of 3 images without width/height

#### Page has only one internal inlink (fragile crawl path)

- Rule: `links.single_inlink` · Category: Links · Occurrences: 2

- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html) — only one internal link points here — if that source changes, this page becomes an orphan. Add more contextual internal links to strengthen the crawl path.
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html) — only one internal link points here — if that source changes, this page becomes an orphan. Add more contextual internal links to strengthen the crawl path.

#### Missing Open Graph tags

- Rule: `og.missing` · Category: Social · Occurrences: 12

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — og:title, og:description, og:image
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html) — og:title, og:description, og:image
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html) — og:title, og:description, og:image
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html) — og:title, og:description, og:image
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html) — og:title, og:description, og:image
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html) — og:title, og:description, og:image
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — og:title, og:description, og:image
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html) — og:title, og:description, og:image
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html) — og:title, og:description, og:image
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html) — og:title, og:description, og:image
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html) — og:title, og:description, og:image
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html) — og:title, og:description, og:image

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

- Rule: `perf.images_legacy_format` · Category: Performance · Occurrences: 12

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — 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://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html) — 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://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html) — 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://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html) — 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://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html) — 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://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html) — 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.tuner4tronic.com/](https://www.tuner4tronic.com/) — 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.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html) — 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.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html) — 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.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html) — 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.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html) — 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.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html) — 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.

#### robots.txt missing (root returns 404/none)

- Rule: `robots.txt_missing` · Category: Robots · Occurrences: 1

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — robots.txt did not return a 200 at the site root — a healthy site should serve one (declare your sitemap and confirm the host serves root files)

#### No structured data detected

- Rule: `schema.none` · Category: Structured Data · Occurrences: 12

- [https://tuner4tronic.com/](https://tuner4tronic.com/)
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html)
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html)
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html)
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html)
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html)
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/)
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html)
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html)
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html)
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html)
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html)

#### Missing recommended security headers

- Rule: `security.missing_headers` · Category: Security · Occurrences: 12

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — CSP, X-Content-Type-Options
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html) — X-Content-Type-Options, CSP
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html) — CSP, X-Content-Type-Options
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html) — CSP, X-Content-Type-Options
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html) — CSP, X-Content-Type-Options
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html) — CSP, X-Content-Type-Options
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/) — CSP, X-Content-Type-Options
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html) — CSP, X-Content-Type-Options
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html) — CSP, X-Content-Type-Options
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html) — CSP, X-Content-Type-Options
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html) — CSP, X-Content-Type-Options
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html) — CSP, X-Content-Type-Options

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

- Rule: `security.unsafe_cross_origin_links` · Category: Security · Occurrences: 8

- [https://tuner4tronic.com/](https://tuner4tronic.com/) — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html) — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html) — 1 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.tuner4tronic.com/](https://www.tuner4tronic.com/) — 1 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.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html) — 1 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.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html) — 2 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.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html) — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".

#### Missing Twitter Card tag

- Rule: `twitter.missing` · Category: Social · Occurrences: 12

- [https://tuner4tronic.com/](https://tuner4tronic.com/)
- [https://tuner4tronic.com/docu/index.html](https://tuner4tronic.com/docu/index.html)
- [https://tuner4tronic.com/imprint.html](https://tuner4tronic.com/imprint.html)
- [https://tuner4tronic.com/oss.html](https://tuner4tronic.com/oss.html)
- [https://tuner4tronic.com/privacy.html](https://tuner4tronic.com/privacy.html)
- [https://tuner4tronic.com/terms.html](https://tuner4tronic.com/terms.html)
- [https://www.tuner4tronic.com/](https://www.tuner4tronic.com/)
- [https://www.tuner4tronic.com/docu/index.html](https://www.tuner4tronic.com/docu/index.html)
- [https://www.tuner4tronic.com/imprint.html](https://www.tuner4tronic.com/imprint.html)
- [https://www.tuner4tronic.com/oss.html](https://www.tuner4tronic.com/oss.html)
- [https://www.tuner4tronic.com/privacy.html](https://www.tuner4tronic.com/privacy.html)
- [https://www.tuner4tronic.com/terms.html](https://www.tuner4tronic.com/terms.html)

## Checks & coverage

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

- ✗ Agent Readiness — 12 warning(s), 13 notice(s)
- ✓ AI Content — clean
- ✓ Amp — clean
- ✓ Budget — clean
- ✓ Cache — clean
- ✗ Canonical — 12 warning(s)
- ✗ Content — 4 warning(s), 4 notice(s)
- ✗ Crawlability — 12 warning(s)
- ✗ Duplicate — 21 warning(s)
- ✓ Geo — clean
- ✗ Headings — 4 warning(s)
- ✓ Hreflang — clean
- ✗ Images — 12 warning(s), 2 notice(s)
- ✓ Indexability — clean
- ✗ Links — 6 warning(s), 2 notice(s)
- ✗ Meta Description — 12 warning(s)
- ✓ Mobile — clean
- ✗ Performance — 12 warning(s), 24 notice(s)
- ✓ Rendering — clean
- ✗ Robots — 1 notice(s)
- ✗ Security — 12 warning(s), 20 notice(s)
- ✓ Sitemap — clean
- ✗ Social — 24 notice(s)
- ✗ Structured Data — 12 notice(s)
- ✓ Titles — clean
- ✓ URL — clean
- ✓ Video — clean

---
*Generated by [Crawlinx](https://crawlinx.com) · free technical-SEO audits · https://crawlinx.com/audit/tuner4tronic.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