---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: estruth.co.jp
report_url: "https://crawlinx.com/audit/estruth.co.jp"
crawl_id: 20260723T094641-82b1a4f6
health_score: 65
generated_at: 2026-08-26T01:56:54Z
total_pages: 21
html_pages: 21
indexable_pages: 21
errors: 0
warnings: 152
notices: 277
---

# SEO audit: estruth.co.jp

**Health score: 65/100** — needs attention

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

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 21 |
| HTML pages | 21 |
| Indexable | 21 |
| Non-indexable | 0 |
| Orphan pages | 0 |
| Broken internal links | 0 |
| Avg response time | 1252 ms |
| Errors / Warnings / Notices | 0 / 152 / 277 |
| Status codes | 21×200 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Links | 64 | 0 | 25 | 26 |
| Agent Readiness | 70 | 0 | 21 | 15 |
| Canonical | 70 | 0 | 21 | 0 |
| Performance | 70 | 0 | 21 | 71 |
| Duplicate | 71 | 0 | 20 | 8 |
| Content | 74 | 0 | 18 | 0 |
| Images | 89 | 0 | 8 | 21 |
| Meta Description | 89 | 0 | 8 | 8 |
| Structured Data | 93 | 0 | 5 | 21 |
| Headings | 97 | 0 | 2 | 3 |
| URL | 97 | 0 | 2 | 0 |
| Crawlability | 99 | 0 | 1 | 3 |
| Cache | 100 | 0 | 0 | 21 |
| Security | 100 | 0 | 0 | 36 |
| Social | 100 | 0 | 0 | 42 |
| Titles | 100 | 0 | 0 | 2 |

## Issues

### Warnings (152)

#### Control has no accessible name

- Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 21

- [https://estruth.co.jp/](https://estruth.co.jp/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — 4 button/link(s) with no text or aria-label — an agent can't target them
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — 4 button/link(s) with no text or aria-label — an agent can't target them
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — 4 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — 3 button/link(s) with no text or aria-label — an agent can't target them

#### Missing canonical tag

- Rule: `canonical.missing` · Category: Canonical · Occurrences: 21

- [https://estruth.co.jp/](https://estruth.co.jp/)
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/)
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1)
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/)
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/)
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1)
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/)
- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/)
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/)
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/)
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/)
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/)
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/)
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/)
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/)
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/)
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/)
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/)
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/)
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/)
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/)

#### Thin content (low word count)

- Rule: `content.thin` · Category: Content · Occurrences: 18

- [https://estruth.co.jp/](https://estruth.co.jp/) — 86 words
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — 41 words
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — 41 words
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — 71 words
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — 71 words
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — 97 words
- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — 45 words
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — 49 words
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — 46 words
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — 53 words
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — 44 words
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — 117 words
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — 86 words
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — 117 words
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — 41 words
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — 71 words
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — 97 words
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — 117 words

#### Duplicate page content

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

- [https://estruth.co.jp/company/](https://estruth.co.jp/company/) — content shared by 3 pages: https://www.estruth.co.jp//company/, https://www.estruth.co.jp/company/
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — content shared by 3 pages: https://estruth.co.jp/company/, https://www.estruth.co.jp/company/
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — content shared by 3 pages: https://estruth.co.jp/company/, https://www.estruth.co.jp//company/

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

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

- [https://estruth.co.jp/](https://estruth.co.jp/) — https://www.estruth.co.jp/ 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: 16

- [https://estruth.co.jp/](https://estruth.co.jp/) — title shared by 2 pages: https://www.estruth.co.jp/
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — title shared by 3 pages: https://estruth.co.jp/catalog/?cancel=1, https://www.estruth.co.jp/catalog/
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — title shared by 3 pages: https://estruth.co.jp/catalog/, https://www.estruth.co.jp/catalog/
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/) — title shared by 3 pages: https://www.estruth.co.jp//company/, https://www.estruth.co.jp/company/
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — title shared by 3 pages: https://estruth.co.jp/contact/?cancel=1, https://www.estruth.co.jp/contact/
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — title shared by 3 pages: https://estruth.co.jp/contact/, https://www.estruth.co.jp/contact/
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — title shared by 2 pages: https://www.estruth.co.jp/news/
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — title shared by 3 pages: https://www.estruth.co.jp//recruit/, https://www.estruth.co.jp/recruit/
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — title shared by 2 pages: https://estruth.co.jp/
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — title shared by 3 pages: https://estruth.co.jp/company/, https://www.estruth.co.jp/company/
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — title shared by 3 pages: https://estruth.co.jp/recruit/, https://www.estruth.co.jp/recruit/
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — title shared by 3 pages: https://estruth.co.jp/catalog/, https://estruth.co.jp/catalog/?cancel=1
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — title shared by 3 pages: https://estruth.co.jp/company/, https://www.estruth.co.jp//company/
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — title shared by 3 pages: https://estruth.co.jp/contact/, https://estruth.co.jp/contact/?cancel=1
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — title shared by 2 pages: https://estruth.co.jp/news/
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — title shared by 3 pages: https://estruth.co.jp/recruit/, https://www.estruth.co.jp//recruit/

#### Missing <h1>

- Rule: `h1.missing` · Category: Headings · Occurrences: 2

- [https://estruth.co.jp/](https://estruth.co.jp/)
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/)

#### Images missing alt text

- Rule: `images.missing_alt` · Category: Images · Occurrences: 8

- [https://estruth.co.jp/](https://estruth.co.jp/) — 1 of 52 images missing alt
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/) — 3 of 21 images missing alt
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — 8 of 23 images missing alt
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — 8 of 23 images missing alt
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — 1 of 52 images missing alt
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — 3 of 21 images missing alt
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — 3 of 21 images missing alt
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — 8 of 23 images missing alt

#### Internal link points to a redirect

- Rule: `links.redirect_target` · Category: Links · Occurrences: 25

- [https://estruth.co.jp/](https://estruth.co.jp/) — https://estruth.co.jp/catalog/ → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — https://estruth.co.jp/catalog/ → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — https://estruth.co.jp/catalog/?cancel=1 → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — https://estruth.co.jp/catalog/ → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — https://estruth.co.jp/catalog/?cancel=1 → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/) — https://estruth.co.jp/catalog/ → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — https://estruth.co.jp/catalog/ → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — https://estruth.co.jp/contact/?cancel=1 → https://estruth.co.jp/contact/
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — https://estruth.co.jp/catalog/ → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — https://estruth.co.jp/contact/?cancel=1 → https://estruth.co.jp/contact/
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — https://estruth.co.jp/catalog/ → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — https://estruth.co.jp/catalog/ → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — https://estruth.co.jp/catalog/ → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — https://estruth.co.jp/catalog/ → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — https://estruth.co.jp/catalog/ → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — https://estruth.co.jp/catalog/ → https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — https://estruth.co.jp/catalog/ → https://estruth.co.jp/catalog/1/
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — https://www.estruth.co.jp/catalog/ → https://www.estruth.co.jp/catalog/1/
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — https://www.estruth.co.jp/catalog/ → https://www.estruth.co.jp/catalog/1/
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — https://www.estruth.co.jp/catalog/ → https://www.estruth.co.jp/catalog/1/
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — https://www.estruth.co.jp/catalog/ → https://www.estruth.co.jp/catalog/1/
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — https://www.estruth.co.jp/catalog/ → https://www.estruth.co.jp/catalog/1/
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — https://www.estruth.co.jp/catalog/ → https://www.estruth.co.jp/catalog/1/
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — https://www.estruth.co.jp/catalog/ → https://www.estruth.co.jp/catalog/1/
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — https://www.estruth.co.jp/catalog/ → https://www.estruth.co.jp/catalog/1/

#### Missing meta description

- Rule: `meta_desc.missing` · Category: Meta Description · Occurrences: 8

- [https://estruth.co.jp/](https://estruth.co.jp/)
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/)
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/)
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/)
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/)
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/)
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/)
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/)

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

- Rule: `perf.render_blocking` · Category: Performance · Occurrences: 21

- [https://estruth.co.jp/](https://estruth.co.jp/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)

#### Redirect chain (multiple hops)

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

- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — 2 hops ending at https://estruth.co.jp/catalog/1/

#### Deprecated data-vocabulary.org markup (no rich-result eligibility)

- Rule: `schema.data_vocabulary` · Category: Structured Data · Occurrences: 5

- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — the page uses the retired data-vocabulary.org vocabulary — Google no longer processes it for any rich result. Migrate to schema.org (e.g. data-vocabulary.org/Breadcrumb → schema.org/BreadcrumbList).
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — the page uses the retired data-vocabulary.org vocabulary — Google no longer processes it for any rich result. Migrate to schema.org (e.g. data-vocabulary.org/Breadcrumb → schema.org/BreadcrumbList).
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — the page uses the retired data-vocabulary.org vocabulary — Google no longer processes it for any rich result. Migrate to schema.org (e.g. data-vocabulary.org/Breadcrumb → schema.org/BreadcrumbList).
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — the page uses the retired data-vocabulary.org vocabulary — Google no longer processes it for any rich result. Migrate to schema.org (e.g. data-vocabulary.org/Breadcrumb → schema.org/BreadcrumbList).
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — the page uses the retired data-vocabulary.org vocabulary — Google no longer processes it for any rich result. Migrate to schema.org (e.g. data-vocabulary.org/Breadcrumb → schema.org/BreadcrumbList).

#### Double slash in URL path (duplicate-content risk)

- Rule: `url.double_slash` · Category: URL · Occurrences: 2

- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/)
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/)

### Notices (277)

#### No llms.txt for AI agents

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

- [https://estruth.co.jp/](https://estruth.co.jp/) — 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: 14

- [https://estruth.co.jp/](https://estruth.co.jp/) — add a <main> element (or role=main) around the primary content
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/) — add a <main> element (or role=main) around the primary content
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — add a <main> element (or role=main) around the primary content
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — add a <main> element (or role=main) around the primary content
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — add a <main> element (or role=main) around the primary content
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — add a <main> element (or role=main) around the primary content
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — add a <main> element (or role=main) around the primary content
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — add a <main> element (or role=main) around the primary content
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — add a <main> element (or role=main) around the primary content
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — add a <main> element (or role=main) around the primary content
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — add a <main> element (or role=main) around the primary content
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — add a <main> element (or role=main) around the primary content
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — add a <main> element (or role=main) around the primary content
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — add a <main> element (or role=main) around the primary content

#### Page served uncached (no-store/private or CDN bypass)

- Rule: `cache.not_cacheable` · Category: Cache · Occurrences: 21

- [https://estruth.co.jp/](https://estruth.co.jp/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — Cache-Control: no-store, no-cache, must-revalidate
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — Cache-Control: no-store, no-cache, must-revalidate
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — Cache-Control: no-store, no-cache, must-revalidate
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — Cache-Control: no-store, no-cache, must-revalidate

#### Duplicate meta description across pages

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

- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — meta description shared by 3 pages: https://estruth.co.jp/catalog/?cancel=1, https://www.estruth.co.jp/catalog/
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — meta description shared by 3 pages: https://estruth.co.jp/catalog/, https://www.estruth.co.jp/catalog/
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — meta description shared by 3 pages: https://estruth.co.jp/contact/?cancel=1, https://www.estruth.co.jp/contact/
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — meta description shared by 3 pages: https://estruth.co.jp/contact/, https://www.estruth.co.jp/contact/
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — meta description shared by 2 pages: https://www.estruth.co.jp/news/
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — meta description shared by 3 pages: https://estruth.co.jp/catalog/, https://estruth.co.jp/catalog/?cancel=1
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — meta description shared by 3 pages: https://estruth.co.jp/contact/, https://estruth.co.jp/contact/?cancel=1
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — meta description shared by 2 pages: https://estruth.co.jp/news/

#### Multiple <h1> elements

- Rule: `h1.multiple` · Category: Headings · Occurrences: 3

- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — 2 <h1> elements
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — 2 <h1> elements
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — 2 <h1> elements

#### Likely hero image lacks fetchpriority=high

- Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 21

- [https://estruth.co.jp/](https://estruth.co.jp/) — the likely hero/LCP image (logomark.svg) 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://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — the likely hero/LCP image (logo_estruth.svg) 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://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — the likely hero/LCP image (logo_estruth.svg) 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://estruth.co.jp/company/](https://estruth.co.jp/company/) — the likely hero/LCP image (logo_estruth.svg) 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://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — the likely hero/LCP image (logo_estruth.svg) 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://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — the likely hero/LCP image (logo_estruth.svg) 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://estruth.co.jp/news/](https://estruth.co.jp/news/) — the likely hero/LCP image (logo_estruth.svg) 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://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — the likely hero/LCP image (logo_estruth.svg) 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://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — the likely hero/LCP image (logo_estruth.svg) 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://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — the likely hero/LCP image (logo_estruth.svg) 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://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — the likely hero/LCP image (logo_estruth.svg) 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://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — the likely hero/LCP image (logo_estruth.svg) 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://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — the likely hero/LCP image (logo_estruth.svg) 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.estruth.co.jp/](https://www.estruth.co.jp/) — the likely hero/LCP image (logomark.svg) 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.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — the likely hero/LCP image (logo_estruth.svg) 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.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — the likely hero/LCP image (logo_estruth.svg) 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.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — the likely hero/LCP image (logo_estruth.svg) 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.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — the likely hero/LCP image (logo_estruth.svg) 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.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — the likely hero/LCP image (logo_estruth.svg) 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.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — the likely hero/LCP image (logo_estruth.svg) 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.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — the likely hero/LCP image (logo_estruth.svg) 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: 21

- [https://estruth.co.jp/](https://estruth.co.jp/) — 52 of 52 images without width/height
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — 15 of 15 images without width/height
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — 15 of 15 images without width/height
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/) — 21 of 21 images without width/height
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — 23 of 23 images without width/height
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — 23 of 23 images without width/height
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — 15 of 15 images without width/height
- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — 15 of 15 images without width/height
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — 15 of 15 images without width/height
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — 15 of 15 images without width/height
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — 15 of 15 images without width/height
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — 15 of 15 images without width/height
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — 18 of 18 images without width/height
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — 52 of 52 images without width/height
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — 21 of 21 images without width/height
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — 18 of 18 images without width/height
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — 15 of 15 images without width/height
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — 21 of 21 images without width/height
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — 23 of 23 images without width/height
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — 15 of 15 images without width/height
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — 18 of 18 images without width/height

#### Internal link has no anchor text / accessible name

- Rule: `links.no_anchor_text` · Category: Links · Occurrences: 21

- [https://estruth.co.jp/](https://estruth.co.jp/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — 2 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.

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

- Rule: `links.single_inlink` · Category: Links · Occurrences: 5

- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — 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://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — 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://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — 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://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — 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://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — 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.

#### Meta description too short

- Rule: `meta_desc.too_short` · Category: Meta Description · Occurrences: 8

- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — 47 chars
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — 47 chars
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — 25 chars
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — 25 chars
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — 16 chars
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — 47 chars
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — 25 chars
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — 16 chars

#### Missing Open Graph tags

- Rule: `og.missing` · Category: Social · Occurrences: 21

- [https://estruth.co.jp/](https://estruth.co.jp/) — og:title, og:description, og:image
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — og:image
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — og:image
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/) — og:title, og:description, og:image
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — og:title, og:description, og:image
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — og:title, og:description, og:image
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — og:image
- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — og:image
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — og:image
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — og:image
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — og:image
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — og:image
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — og:description, og:image
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — og:title, og:description, og:image
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — og:title, og:description, og:image
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — og:description, og:image
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — og:image
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — og:title, og:description, og:image
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — og:title, og:description, og:image
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — og:image
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — og:description, og:image

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

- Rule: `perf.images_legacy_format` · Category: Performance · Occurrences: 8

- [https://estruth.co.jp/](https://estruth.co.jp/) — 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://estruth.co.jp/company/](https://estruth.co.jp/company/) — 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://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — 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.estruth.co.jp/](https://www.estruth.co.jp/) — 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.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — 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.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — 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.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — 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.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — 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.

#### No ETag header (no conditional GET for unchanged pages)

- Rule: `perf.no_etag` · Category: Performance · Occurrences: 21

- [https://estruth.co.jp/](https://estruth.co.jp/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.

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

- Rule: `perf.no_last_modified` · Category: Performance · Occurrences: 21

- [https://estruth.co.jp/](https://estruth.co.jp/) — 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://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — 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://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — 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://estruth.co.jp/company/](https://estruth.co.jp/company/) — 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://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — 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://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — 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://estruth.co.jp/news/](https://estruth.co.jp/news/) — 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://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — 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://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — 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://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — 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://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — 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://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — 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://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — 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.estruth.co.jp/](https://www.estruth.co.jp/) — 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.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — 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.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — 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.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — 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.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — 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.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — 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.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — 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.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — 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: 3

- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — redirects to https://estruth.co.jp/catalog/1/
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — redirects to https://estruth.co.jp/contact/
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — redirects to https://www.estruth.co.jp/catalog/1/

#### Deep page has no BreadcrumbList structured data

- Rule: `schema.breadcrumb_missing` · Category: Structured Data · Occurrences: 5

- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — depth-2 page has structured data but no BreadcrumbList
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — depth-2 page has structured data but no BreadcrumbList
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — depth-2 page has structured data but no BreadcrumbList
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — depth-2 page has structured data but no BreadcrumbList
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — depth-2 page has structured data but no BreadcrumbList

#### No structured data detected

- Rule: `schema.none` · Category: Structured Data · Occurrences: 16

- [https://estruth.co.jp/](https://estruth.co.jp/)
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/)
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1)
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/)
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/)
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1)
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/)
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/)
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/)
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/)
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/)
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/)
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/)
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/)
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/)
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/)

#### Missing recommended security headers

- Rule: `security.missing_headers` · Category: Security · Occurrences: 21

- [https://estruth.co.jp/](https://estruth.co.jp/) — CSP, X-Content-Type-Options
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/) — X-Content-Type-Options, CSP
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1) — CSP, X-Content-Type-Options
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/) — CSP, X-Content-Type-Options
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/) — CSP, X-Content-Type-Options
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1) — CSP, X-Content-Type-Options
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/) — CSP, X-Content-Type-Options
- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — CSP, X-Content-Type-Options
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — CSP, X-Content-Type-Options
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — CSP, X-Content-Type-Options
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — CSP, X-Content-Type-Options
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — CSP, X-Content-Type-Options
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — CSP, X-Content-Type-Options
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — CSP, X-Content-Type-Options
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — CSP, X-Content-Type-Options
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — CSP, X-Content-Type-Options
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/) — CSP, X-Content-Type-Options
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — CSP, X-Content-Type-Options
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/) — CSP, X-Content-Type-Options
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — CSP, X-Content-Type-Options
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — CSP, X-Content-Type-Options

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

- Rule: `security.unsafe_cross_origin_links` · Category: Security · Occurrences: 15

- [https://estruth.co.jp/](https://estruth.co.jp/) — 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://estruth.co.jp/company/](https://estruth.co.jp/company/) — 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://estruth.co.jp/news/](https://estruth.co.jp/news/) — 3 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/) — 3 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/) — 3 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/) — 3 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/) — 3 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/) — 3 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/) — 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.estruth.co.jp/](https://www.estruth.co.jp/) — 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.estruth.co.jp//company/](https://www.estruth.co.jp//company/) — 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.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/) — 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.estruth.co.jp/company/](https://www.estruth.co.jp/company/) — 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.estruth.co.jp/news/](https://www.estruth.co.jp/news/) — 3 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.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/) — 4 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".

#### Title is very short

- Rule: `title.too_short` · Category: Titles · Occurrences: 2

- [https://estruth.co.jp/](https://estruth.co.jp/) — 11 chars
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/) — 11 chars

#### Missing Twitter Card tag

- Rule: `twitter.missing` · Category: Social · Occurrences: 21

- [https://estruth.co.jp/](https://estruth.co.jp/)
- [https://estruth.co.jp/catalog/](https://estruth.co.jp/catalog/)
- [https://estruth.co.jp/catalog/?cancel=1](https://estruth.co.jp/catalog/?cancel=1)
- [https://estruth.co.jp/company/](https://estruth.co.jp/company/)
- [https://estruth.co.jp/contact/](https://estruth.co.jp/contact/)
- [https://estruth.co.jp/contact/?cancel=1](https://estruth.co.jp/contact/?cancel=1)
- [https://estruth.co.jp/news/](https://estruth.co.jp/news/)
- [https://estruth.co.jp/news/144/](https://estruth.co.jp/news/144/)
- [https://estruth.co.jp/news/145/](https://estruth.co.jp/news/145/)
- [https://estruth.co.jp/news/146/](https://estruth.co.jp/news/146/)
- [https://estruth.co.jp/news/147/](https://estruth.co.jp/news/147/)
- [https://estruth.co.jp/news/148/](https://estruth.co.jp/news/148/)
- [https://estruth.co.jp/recruit/](https://estruth.co.jp/recruit/)
- [https://www.estruth.co.jp/](https://www.estruth.co.jp/)
- [https://www.estruth.co.jp//company/](https://www.estruth.co.jp//company/)
- [https://www.estruth.co.jp//recruit/](https://www.estruth.co.jp//recruit/)
- [https://www.estruth.co.jp/catalog/](https://www.estruth.co.jp/catalog/)
- [https://www.estruth.co.jp/company/](https://www.estruth.co.jp/company/)
- [https://www.estruth.co.jp/contact/](https://www.estruth.co.jp/contact/)
- [https://www.estruth.co.jp/news/](https://www.estruth.co.jp/news/)
- [https://www.estruth.co.jp/recruit/](https://www.estruth.co.jp/recruit/)

## Checks & coverage

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

- ✗ Agent Readiness — 21 warning(s), 15 notice(s)
- ✓ AI Content — clean
- ✓ Amp — clean
- ✓ Budget — clean
- ✗ Cache — 21 notice(s)
- ✗ Canonical — 21 warning(s)
- ✗ Content — 18 warning(s)
- ✗ Crawlability — 1 warning(s), 3 notice(s)
- ✗ Duplicate — 20 warning(s), 8 notice(s)
- ✓ Geo — clean
- ✗ Headings — 2 warning(s), 3 notice(s)
- ✓ Hreflang — clean
- ✗ Images — 8 warning(s), 21 notice(s)
- ✓ Indexability — clean
- ✗ Links — 25 warning(s), 26 notice(s)
- ✗ Meta Description — 8 warning(s), 8 notice(s)
- ✓ Mobile — clean
- ✗ Performance — 21 warning(s), 71 notice(s)
- ✓ Rendering — clean
- ✓ Robots — clean
- ✗ Security — 36 notice(s)
- ✓ Sitemap — clean
- ✗ Social — 42 notice(s)
- ✗ Structured Data — 5 warning(s), 21 notice(s)
- ✗ Titles — 2 notice(s)
- ✗ URL — 2 warning(s)
- ✓ Video — clean

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

## 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