---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: koyo1973.co.jp
report_url: "https://crawlinx.com/audit/koyo1973.co.jp"
crawl_id: 20260722T150737-70bc6502
health_score: 61
generated_at: 2026-08-26T04:08:25Z
total_pages: 14
html_pages: 14
indexable_pages: 14
errors: 1
warnings: 69
notices: 146
---

# SEO audit: koyo1973.co.jp

**Health score: 61/100** — needs attention

> Audited by [Crawlinx](https://crawlinx.com) — the free technical-SEO crawler. Full report: https://crawlinx.com/audit/koyo1973.co.jp

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 14 |
| HTML pages | 14 |
| Indexable | 14 |
| Non-indexable | 0 |
| Orphan pages | 2 |
| Broken internal links | 0 |
| Avg response time | 1064 ms |
| Errors / Warnings / Notices | 1 / 69 / 146 |
| Status codes | 14×200 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Security | 93 | 1 | 0 | 14 |
| Agent Readiness | 70 | 0 | 14 | 6 |
| Content | 70 | 0 | 14 | 9 |
| Images | 70 | 0 | 14 | 1 |
| Performance | 70 | 0 | 14 | 56 |
| Headings | 87 | 0 | 6 | 0 |
| Canonical | 89 | 0 | 5 | 0 |
| Links | 96 | 0 | 2 | 4 |
| Duplicate | 100 | 0 | 0 | 6 |
| Meta Description | 100 | 0 | 0 | 7 |
| Sitemap | 100 | 0 | 0 | 1 |
| Social | 100 | 0 | 0 | 28 |
| Structured Data | 100 | 0 | 0 | 7 |
| Titles | 100 | 0 | 0 | 5 |
| URL | 100 | 0 | 0 | 2 |

## Issues

### Errors (1)

#### Mixed content on HTTPS page

- Rule: `security.mixed_content` · Category: Security · Occurrences: 1

- [https://koyo1973.co.jp/company/](https://koyo1973.co.jp/company/) — 1 insecure subresource(s), e.g. http://koyo.ringue.jp/wp-content/uploads/2024/01/map.webp

### Warnings (69)

#### Control has no accessible name

- Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 14

- [https://koyo1973.co.jp/](https://koyo1973.co.jp/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://koyo1973.co.jp/company/](https://koyo1973.co.jp/company/) — 3 button/link(s) with no text or aria-label — an agent can't target them
- [https://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://koyo1973.co.jp/message/](https://koyo1973.co.jp/message/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://koyo1973.co.jp/products/environmental-initiatives/](https://koyo1973.co.jp/products/environmental-initiatives/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://koyo1973.co.jp/products/innovation-and-market-adaptation/](https://koyo1973.co.jp/products/innovation-and-market-adaptation/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — 2 button/link(s) with no text or aria-label — an agent can't target them
- [https://koyo1973.co.jp/recruit/](https://koyo1973.co.jp/recruit/) — 2 button/link(s) with no text or aria-label — an agent can't target them

#### Missing canonical tag

- Rule: `canonical.missing` · Category: Canonical · Occurrences: 5

- [https://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/)
- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/)
- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/)
- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/)
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/)

#### Thin content (low word count)

- Rule: `content.thin` · Category: Content · Occurrences: 14

- [https://koyo1973.co.jp/](https://koyo1973.co.jp/) — 49 words
- [https://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/) — 32 words
- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — 35 words
- [https://koyo1973.co.jp/company/](https://koyo1973.co.jp/company/) — 54 words
- [https://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/) — 41 words
- [https://koyo1973.co.jp/message/](https://koyo1973.co.jp/message/) — 36 words
- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — 47 words
- [https://koyo1973.co.jp/products/environmental-initiatives/](https://koyo1973.co.jp/products/environmental-initiatives/) — 38 words
- [https://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/) — 39 words
- [https://koyo1973.co.jp/products/innovation-and-market-adaptation/](https://koyo1973.co.jp/products/innovation-and-market-adaptation/) — 38 words
- [https://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/) — 63 words
- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — 57 words
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — 54 words
- [https://koyo1973.co.jp/recruit/](https://koyo1973.co.jp/recruit/) — 100 words

#### Missing <h1>

- Rule: `h1.missing` · Category: Headings · Occurrences: 6

- [https://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/)
- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/)
- [https://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/)
- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/)
- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/)
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/)

#### Images missing alt text

- Rule: `images.missing_alt` · Category: Images · Occurrences: 14

- [https://koyo1973.co.jp/](https://koyo1973.co.jp/) — 6 of 9 images missing alt
- [https://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/) — 2 of 5 images missing alt
- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — 2 of 4 images missing alt
- [https://koyo1973.co.jp/company/](https://koyo1973.co.jp/company/) — 5 of 9 images missing alt
- [https://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/) — 2 of 5 images missing alt
- [https://koyo1973.co.jp/message/](https://koyo1973.co.jp/message/) — 2 of 5 images missing alt
- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — 2 of 4 images missing alt
- [https://koyo1973.co.jp/products/environmental-initiatives/](https://koyo1973.co.jp/products/environmental-initiatives/) — 3 of 6 images missing alt
- [https://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/) — 3 of 6 images missing alt
- [https://koyo1973.co.jp/products/innovation-and-market-adaptation/](https://koyo1973.co.jp/products/innovation-and-market-adaptation/) — 3 of 6 images missing alt
- [https://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/) — 3 of 6 images missing alt
- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — 4 of 7 images missing alt
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — 4 of 7 images missing alt
- [https://koyo1973.co.jp/recruit/](https://koyo1973.co.jp/recruit/) — 2 of 5 images missing alt

#### Orphan page (no internal inlinks)

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

- [https://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/) — no internal links point here
- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — no internal links point here

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

- Rule: `perf.render_blocking` · Category: Performance · Occurrences: 14

- [https://koyo1973.co.jp/](https://koyo1973.co.jp/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://koyo1973.co.jp/company/](https://koyo1973.co.jp/company/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://koyo1973.co.jp/message/](https://koyo1973.co.jp/message/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://koyo1973.co.jp/products/environmental-initiatives/](https://koyo1973.co.jp/products/environmental-initiatives/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://koyo1973.co.jp/products/innovation-and-market-adaptation/](https://koyo1973.co.jp/products/innovation-and-market-adaptation/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://koyo1973.co.jp/recruit/](https://koyo1973.co.jp/recruit/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)

### Notices (146)

#### No llms.txt for AI agents

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

- [https://koyo1973.co.jp/](https://koyo1973.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: 5

- [https://koyo1973.co.jp/company/](https://koyo1973.co.jp/company/) — add a <main> element (or role=main) around the primary content
- [https://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/) — add a <main> element (or role=main) around the primary content
- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — add a <main> element (or role=main) around the primary content
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — add a <main> element (or role=main) around the primary content
- [https://koyo1973.co.jp/recruit/](https://koyo1973.co.jp/recruit/) — add a <main> element (or role=main) around the primary content

#### Low text-to-HTML ratio

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

- [https://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/) — 2.4%
- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — 2.5%
- [https://koyo1973.co.jp/company/](https://koyo1973.co.jp/company/) — 3.8%
- [https://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/) — 2.8%
- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — 5.0%
- [https://koyo1973.co.jp/products/environmental-initiatives/](https://koyo1973.co.jp/products/environmental-initiatives/) — 3.3%
- [https://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/) — 2.7%
- [https://koyo1973.co.jp/products/innovation-and-market-adaptation/](https://koyo1973.co.jp/products/innovation-and-market-adaptation/) — 3.5%
- [https://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/) — 4.4%

#### Duplicate meta description across pages

- Rule: `duplicate.meta_desc` · Category: Duplicate · Occurrences: 6

- [https://koyo1973.co.jp/](https://koyo1973.co.jp/) — meta description shared by 6 pages: https://koyo1973.co.jp/blog/, https://koyo1973.co.jp/contact/, https://koyo1973.co.jp/products_category/product/
- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — meta description shared by 6 pages: https://koyo1973.co.jp/, https://koyo1973.co.jp/contact/, https://koyo1973.co.jp/products_category/product/
- [https://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/) — meta description shared by 6 pages: https://koyo1973.co.jp/, https://koyo1973.co.jp/blog/, https://koyo1973.co.jp/products_category/product/
- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — meta description shared by 6 pages: https://koyo1973.co.jp/, https://koyo1973.co.jp/blog/, https://koyo1973.co.jp/contact/
- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — meta description shared by 6 pages: https://koyo1973.co.jp/, https://koyo1973.co.jp/blog/, https://koyo1973.co.jp/contact/
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — meta description shared by 6 pages: https://koyo1973.co.jp/, https://koyo1973.co.jp/blog/, https://koyo1973.co.jp/contact/

#### Likely hero image lacks fetchpriority=high

- Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 14

- [https://koyo1973.co.jp/](https://koyo1973.co.jp/) — the likely hero/LCP image (logo-header-color.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://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/) — the likely hero/LCP image (logo-header-color.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://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — the likely hero/LCP image (logo-header-color.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://koyo1973.co.jp/company/](https://koyo1973.co.jp/company/) — the likely hero/LCP image (logo-header-color.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://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/) — the likely hero/LCP image (logo-header-color.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://koyo1973.co.jp/message/](https://koyo1973.co.jp/message/) — the likely hero/LCP image (logo-header-color.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://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — the likely hero/LCP image (logo-header-color.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://koyo1973.co.jp/products/environmental-initiatives/](https://koyo1973.co.jp/products/environmental-initiatives/) — the likely hero/LCP image (logo-header-color.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://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/) — the likely hero/LCP image (logo-header-color.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://koyo1973.co.jp/products/innovation-and-market-adaptation/](https://koyo1973.co.jp/products/innovation-and-market-adaptation/) — the likely hero/LCP image (logo-header-color.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://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/) — the likely hero/LCP image (logo-header-color.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://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — the likely hero/LCP image (logo-header-color.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://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — the likely hero/LCP image (logo-header-color.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://koyo1973.co.jp/recruit/](https://koyo1973.co.jp/recruit/) — the likely hero/LCP image (logo-header-color.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: 1

- [https://koyo1973.co.jp/company/](https://koyo1973.co.jp/company/) — 3 of 9 images without width/height

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

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

- [https://koyo1973.co.jp/products/environmental-initiatives/](https://koyo1973.co.jp/products/environmental-initiatives/) — 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://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/) — 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://koyo1973.co.jp/products/innovation-and-market-adaptation/](https://koyo1973.co.jp/products/innovation-and-market-adaptation/) — 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://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/) — 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: 7

- [https://koyo1973.co.jp/](https://koyo1973.co.jp/) — 18 chars
- [https://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/) — 18 chars
- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — 18 chars
- [https://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/) — 18 chars
- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — 18 chars
- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — 18 chars
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — 18 chars

#### Missing Open Graph tags

- Rule: `og.missing` · Category: Social · Occurrences: 14

- [https://koyo1973.co.jp/](https://koyo1973.co.jp/) — og:title, og:description, og:image
- [https://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/) — og:title, og:description, og:image
- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — og:title, og:description, og:image
- [https://koyo1973.co.jp/company/](https://koyo1973.co.jp/company/) — og:title, og:description, og:image
- [https://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/) — og:title, og:description, og:image
- [https://koyo1973.co.jp/message/](https://koyo1973.co.jp/message/) — og:title, og:description, og:image
- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — og:title, og:description, og:image
- [https://koyo1973.co.jp/products/environmental-initiatives/](https://koyo1973.co.jp/products/environmental-initiatives/) — og:title, og:description, og:image
- [https://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/) — og:title, og:description, og:image
- [https://koyo1973.co.jp/products/innovation-and-market-adaptation/](https://koyo1973.co.jp/products/innovation-and-market-adaptation/) — og:title, og:description, og:image
- [https://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/) — og:title, og:description, og:image
- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — og:title, og:description, og:image
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — og:title, og:description, og:image
- [https://koyo1973.co.jp/recruit/](https://koyo1973.co.jp/recruit/) — 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: 14

- [https://koyo1973.co.jp/](https://koyo1973.co.jp/) — 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://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/) — 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://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — 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://koyo1973.co.jp/company/](https://koyo1973.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://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/) — 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://koyo1973.co.jp/message/](https://koyo1973.co.jp/message/) — 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://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — 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://koyo1973.co.jp/products/environmental-initiatives/](https://koyo1973.co.jp/products/environmental-initiatives/) — 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://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/) — 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://koyo1973.co.jp/products/innovation-and-market-adaptation/](https://koyo1973.co.jp/products/innovation-and-market-adaptation/) — 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://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/) — 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://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — 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://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — 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://koyo1973.co.jp/recruit/](https://koyo1973.co.jp/recruit/) — 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.

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

- Rule: `perf.no_etag` · Category: Performance · Occurrences: 14

- [https://koyo1973.co.jp/](https://koyo1973.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://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/) — 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://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — 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://koyo1973.co.jp/company/](https://koyo1973.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://koyo1973.co.jp/contact/](https://koyo1973.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://koyo1973.co.jp/message/](https://koyo1973.co.jp/message/) — 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://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — 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://koyo1973.co.jp/products/environmental-initiatives/](https://koyo1973.co.jp/products/environmental-initiatives/) — 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://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/) — 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://koyo1973.co.jp/products/innovation-and-market-adaptation/](https://koyo1973.co.jp/products/innovation-and-market-adaptation/) — 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://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/) — 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://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — 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://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — 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://koyo1973.co.jp/recruit/](https://koyo1973.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: 14

- [https://koyo1973.co.jp/](https://koyo1973.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://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/) — 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://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — 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://koyo1973.co.jp/company/](https://koyo1973.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://koyo1973.co.jp/contact/](https://koyo1973.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://koyo1973.co.jp/message/](https://koyo1973.co.jp/message/) — 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://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — 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://koyo1973.co.jp/products/environmental-initiatives/](https://koyo1973.co.jp/products/environmental-initiatives/) — 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://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/) — 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://koyo1973.co.jp/products/innovation-and-market-adaptation/](https://koyo1973.co.jp/products/innovation-and-market-adaptation/) — 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://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/) — 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://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — 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://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — 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://koyo1973.co.jp/recruit/](https://koyo1973.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.

#### Deep page has no BreadcrumbList structured data

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

- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — depth-2 page has structured data but no BreadcrumbList

#### No structured data detected

- Rule: `schema.none` · Category: Structured Data · Occurrences: 6

- [https://koyo1973.co.jp/](https://koyo1973.co.jp/)
- [https://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/)
- [https://koyo1973.co.jp/company/](https://koyo1973.co.jp/company/)
- [https://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/)
- [https://koyo1973.co.jp/message/](https://koyo1973.co.jp/message/)
- [https://koyo1973.co.jp/recruit/](https://koyo1973.co.jp/recruit/)

#### Missing recommended security headers

- Rule: `security.missing_headers` · Category: Security · Occurrences: 14

- [https://koyo1973.co.jp/](https://koyo1973.co.jp/) — HSTS, CSP, X-Content-Type-Options
- [https://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/) — CSP, X-Content-Type-Options, HSTS
- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — HSTS, CSP, X-Content-Type-Options
- [https://koyo1973.co.jp/company/](https://koyo1973.co.jp/company/) — HSTS, CSP, X-Content-Type-Options
- [https://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/) — HSTS, CSP, X-Content-Type-Options
- [https://koyo1973.co.jp/message/](https://koyo1973.co.jp/message/) — HSTS, CSP, X-Content-Type-Options
- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — HSTS, CSP, X-Content-Type-Options
- [https://koyo1973.co.jp/products/environmental-initiatives/](https://koyo1973.co.jp/products/environmental-initiatives/) — HSTS, CSP, X-Content-Type-Options
- [https://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/) — HSTS, CSP, X-Content-Type-Options
- [https://koyo1973.co.jp/products/innovation-and-market-adaptation/](https://koyo1973.co.jp/products/innovation-and-market-adaptation/) — X-Content-Type-Options, HSTS, CSP
- [https://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/) — HSTS, CSP, X-Content-Type-Options
- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — CSP, X-Content-Type-Options, HSTS
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — HSTS, CSP, X-Content-Type-Options
- [https://koyo1973.co.jp/recruit/](https://koyo1973.co.jp/recruit/) — HSTS, CSP, X-Content-Type-Options

#### Indexable page not listed in sitemap

- Rule: `sitemap.orphan_not_listed` · Category: Sitemap · Occurrences: 1

- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — indexable but not in sitemap

#### Title is very short

- Rule: `title.too_short` · Category: Titles · Occurrences: 5

- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/) — 14 chars
- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/) — 13 chars
- [https://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/) — 14 chars
- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/) — 12 chars
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/) — 12 chars

#### Missing Twitter Card tag

- Rule: `twitter.missing` · Category: Social · Occurrences: 14

- [https://koyo1973.co.jp/](https://koyo1973.co.jp/)
- [https://koyo1973.co.jp/author/koyo-sawarame/](https://koyo1973.co.jp/author/koyo-sawarame/)
- [https://koyo1973.co.jp/blog/](https://koyo1973.co.jp/blog/)
- [https://koyo1973.co.jp/company/](https://koyo1973.co.jp/company/)
- [https://koyo1973.co.jp/contact/](https://koyo1973.co.jp/contact/)
- [https://koyo1973.co.jp/message/](https://koyo1973.co.jp/message/)
- [https://koyo1973.co.jp/products/](https://koyo1973.co.jp/products/)
- [https://koyo1973.co.jp/products/environmental-initiatives/](https://koyo1973.co.jp/products/environmental-initiatives/)
- [https://koyo1973.co.jp/products/examples-of-use/](https://koyo1973.co.jp/products/examples-of-use/)
- [https://koyo1973.co.jp/products/innovation-and-market-adaptation/](https://koyo1973.co.jp/products/innovation-and-market-adaptation/)
- [https://koyo1973.co.jp/products/specifications-and-ingredient-information/](https://koyo1973.co.jp/products/specifications-and-ingredient-information/)
- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/)
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/)
- [https://koyo1973.co.jp/recruit/](https://koyo1973.co.jp/recruit/)

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

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

- [https://koyo1973.co.jp/products_category/manufacturing-process/](https://koyo1973.co.jp/products_category/manufacturing-process/)
- [https://koyo1973.co.jp/products_category/product/](https://koyo1973.co.jp/products_category/product/)

## Checks & coverage

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

- ✗ Agent Readiness — 14 warning(s), 6 notice(s)
- ✓ AI Content — clean
- ✓ Amp — clean
- ✓ Budget — clean
- ✓ Cache — clean
- ✗ Canonical — 5 warning(s)
- ✗ Content — 14 warning(s), 9 notice(s)
- ✓ Crawlability — clean
- ✗ Duplicate — 6 notice(s)
- ✓ Geo — clean
- ✗ Headings — 6 warning(s)
- ✓ Hreflang — clean
- ✗ Images — 14 warning(s), 1 notice(s)
- ✓ Indexability — clean
- ✗ Links — 2 warning(s), 4 notice(s)
- ✗ Meta Description — 7 notice(s)
- ✓ Mobile — clean
- ✗ Performance — 14 warning(s), 56 notice(s)
- ✓ Rendering — clean
- ✓ Robots — clean
- ✗ Security — 1 error(s), 14 notice(s)
- ✗ Sitemap — 1 notice(s)
- ✗ Social — 28 notice(s)
- ✗ Structured Data — 7 notice(s)
- ✗ Titles — 5 notice(s)
- ✗ URL — 2 notice(s)
- ✓ Video — clean

---
*Generated by [Crawlinx](https://crawlinx.com) · free technical-SEO audits · https://crawlinx.com/audit/koyo1973.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