---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: tantoro.jp
report_url: "https://crawlinx.com/audit/tantoro.jp"
crawl_id: 20260717T222956-9f66b57d
health_score: 76
generated_at: 2026-08-26T06:30:42Z
total_pages: 8
html_pages: 5
indexable_pages: 5
errors: 0
warnings: 26
notices: 55
---

# SEO audit: tantoro.jp

**Health score: 76/100** — good, with fixable gaps

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

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 8 |
| HTML pages | 5 |
| Indexable | 5 |
| Non-indexable | 0 |
| Orphan pages | 0 |
| Broken internal links | 0 |
| Avg response time | 1198 ms |
| Errors / Warnings / Notices | 0 / 26 / 55 |
| Status codes | 8×200 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Canonical | 81 | 0 | 5 | 0 |
| Content | 81 | 0 | 5 | 5 |
| Performance | 81 | 0 | 5 | 10 |
| Security | 81 | 0 | 5 | 10 |
| Duplicate | 89 | 0 | 3 | 5 |
| Mobile | 89 | 0 | 3 | 0 |
| Agent Readiness | 100 | 0 | 0 | 3 |
| Images | 100 | 0 | 0 | 3 |
| Robots | 100 | 0 | 0 | 1 |
| Social | 100 | 0 | 0 | 10 |
| Structured Data | 100 | 0 | 0 | 5 |
| URL | 100 | 0 | 0 | 3 |

## Issues

### Warnings (26)

#### Missing canonical tag

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

- [https://tantoro.jp/](https://tantoro.jp/)
- [https://tantoro.jp/access.html](https://tantoro.jp/access.html)
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html)
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html)
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html)

#### Thin content (low word count)

- Rule: `content.thin` · Category: Content · Occurrences: 5

- [https://tantoro.jp/](https://tantoro.jp/) — 59 words
- [https://tantoro.jp/access.html](https://tantoro.jp/access.html) — 42 words
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html) — 22 words
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html) — 59 words
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html) — 16 words

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

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

- [https://tantoro.jp/](https://tantoro.jp/) — https://www.tantoro.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: 2

- [https://tantoro.jp/](https://tantoro.jp/) — title shared by 2 pages: https://tantoro.jp/index.html
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html) — title shared by 2 pages: https://tantoro.jp/

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

- Rule: `headers.content_type_mismatch` · Category: Security · Occurrences: 5

- [https://tantoro.jp/](https://tantoro.jp/) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://tantoro.jp/access.html](https://tantoro.jp/access.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html) — the Content-Type is "text/html" with no charset — the HTTP charset is authoritative and browsers otherwise guess the encoding, which can garble non-ASCII text (mojibake). Declare it explicitly: "text/html; charset=utf-8".

#### Missing viewport meta tag

- Rule: `mobile.viewport_missing` · Category: Mobile · Occurrences: 3

- [https://tantoro.jp/access.html](https://tantoro.jp/access.html)
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html)
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html)

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

- Rule: `perf.render_blocking` · Category: Performance · Occurrences: 5

- [https://tantoro.jp/](https://tantoro.jp/) — 9 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://tantoro.jp/access.html](https://tantoro.jp/access.html) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html) — 9 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html) — 4 render-blocking <script> in <head> (add defer/async or use type=module)

### Notices (55)

#### No llms.txt for AI agents

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

- [https://tantoro.jp/](https://tantoro.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: 2

- [https://tantoro.jp/](https://tantoro.jp/) — add a <main> element (or role=main) around the primary content
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html) — add a <main> element (or role=main) around the primary content

#### Duplicate meta description across pages

- Rule: `duplicate.meta_desc` · Category: Duplicate · Occurrences: 5

- [https://tantoro.jp/](https://tantoro.jp/) — meta description shared by 5 pages: https://tantoro.jp/index.html, https://tantoro.jp/concept.html, https://tantoro.jp/menu.html
- [https://tantoro.jp/access.html](https://tantoro.jp/access.html) — meta description shared by 5 pages: https://tantoro.jp/, https://tantoro.jp/index.html, https://tantoro.jp/concept.html
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html) — meta description shared by 5 pages: https://tantoro.jp/, https://tantoro.jp/index.html, https://tantoro.jp/menu.html
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html) — meta description shared by 5 pages: https://tantoro.jp/, https://tantoro.jp/concept.html, https://tantoro.jp/menu.html
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html) — meta description shared by 5 pages: https://tantoro.jp/, https://tantoro.jp/index.html, https://tantoro.jp/concept.html

#### Likely hero image lacks fetchpriority=high

- Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 5

- [https://tantoro.jp/](https://tantoro.jp/) — the likely hero/LCP image (logo.gif) 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://tantoro.jp/access.html](https://tantoro.jp/access.html) — the likely hero/LCP image (logo.gif) 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://tantoro.jp/concept.html](https://tantoro.jp/concept.html) — the likely hero/LCP image (logo.gif) 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://tantoro.jp/index.html](https://tantoro.jp/index.html) — the likely hero/LCP image (logo.gif) 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://tantoro.jp/menu.html](https://tantoro.jp/menu.html) — the likely hero/LCP image (second_head.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: 3

- [https://tantoro.jp/access.html](https://tantoro.jp/access.html) — 1 of 6 images without width/height
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html) — 1 of 6 images without width/height
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html) — 1 of 11 images without width/height

#### Legacy <meta name=keywords> tag present (Google ignores it)

- Rule: `meta.keywords_present` · Category: Content · Occurrences: 5

- [https://tantoro.jp/](https://tantoro.jp/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://tantoro.jp/access.html](https://tantoro.jp/access.html) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt

#### Missing Open Graph tags

- Rule: `og.missing` · Category: Social · Occurrences: 5

- [https://tantoro.jp/](https://tantoro.jp/) — og:title, og:description, og:image
- [https://tantoro.jp/access.html](https://tantoro.jp/access.html) — og:title, og:description, og:image
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html) — og:title, og:description, og:image
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html) — og:title, og:description, og:image
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html) — og:title, og:description, og:image

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

- Rule: `perf.images_legacy_format` · Category: Performance · Occurrences: 5

- [https://tantoro.jp/](https://tantoro.jp/) — 6 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://tantoro.jp/access.html](https://tantoro.jp/access.html) — 6 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html) — 6 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html) — 6 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html) — 11 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.

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

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

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

#### No structured data detected

- Rule: `schema.none` · Category: Structured Data · Occurrences: 5

- [https://tantoro.jp/](https://tantoro.jp/)
- [https://tantoro.jp/access.html](https://tantoro.jp/access.html)
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html)
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html)
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html)

#### Missing recommended security headers

- Rule: `security.missing_headers` · Category: Security · Occurrences: 5

- [https://tantoro.jp/](https://tantoro.jp/) — HSTS, CSP, X-Content-Type-Options
- [https://tantoro.jp/access.html](https://tantoro.jp/access.html) — HSTS, CSP, X-Content-Type-Options
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html) — HSTS, CSP, X-Content-Type-Options
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html) — HSTS, CSP, X-Content-Type-Options
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html) — HSTS, CSP, X-Content-Type-Options

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

- Rule: `security.unsafe_cross_origin_links` · Category: Security · Occurrences: 5

- [https://tantoro.jp/](https://tantoro.jp/) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://tantoro.jp/access.html](https://tantoro.jp/access.html) — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html) — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html) — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".

#### Missing Twitter Card tag

- Rule: `twitter.missing` · Category: Social · Occurrences: 5

- [https://tantoro.jp/](https://tantoro.jp/)
- [https://tantoro.jp/access.html](https://tantoro.jp/access.html)
- [https://tantoro.jp/concept.html](https://tantoro.jp/concept.html)
- [https://tantoro.jp/index.html](https://tantoro.jp/index.html)
- [https://tantoro.jp/menu.html](https://tantoro.jp/menu.html)

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

- Rule: `url.underscores` · Category: URL · Occurrences: 3

- [https://tantoro.jp/img/pickup/pickup_01.jpg](https://tantoro.jp/img/pickup/pickup_01.jpg)
- [https://tantoro.jp/img/pickup/pickup_02.jpg](https://tantoro.jp/img/pickup/pickup_02.jpg)
- [https://tantoro.jp/img/pickup/pickup_03.jpg](https://tantoro.jp/img/pickup/pickup_03.jpg)

## Checks & coverage

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

- ✗ Agent Readiness — 3 notice(s)
- ✓ AI Content — clean
- ✓ Amp — clean
- ✓ Budget — clean
- ✓ Cache — clean
- ✗ Canonical — 5 warning(s)
- ✗ Content — 5 warning(s), 5 notice(s)
- ✓ Crawlability — clean
- ✗ Duplicate — 3 warning(s), 5 notice(s)
- ✓ Geo — clean
- ✓ Headings — clean
- ✓ Hreflang — clean
- ✗ Images — 3 notice(s)
- ✓ Indexability — clean
- ✓ Links — clean
- ✓ Meta Description — clean
- ✗ Mobile — 3 warning(s)
- ✗ Performance — 5 warning(s), 10 notice(s)
- ✓ Rendering — clean
- ✗ Robots — 1 notice(s)
- ✗ Security — 5 warning(s), 10 notice(s)
- ✓ Sitemap — clean
- ✗ Social — 10 notice(s)
- ✗ Structured Data — 5 notice(s)
- ✓ Titles — clean
- ✗ URL — 3 notice(s)
- ✓ Video — clean

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