---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: tiiiyes.cn
report_url: "https://crawlinx.com/audit/tiiiyes.cn"
crawl_id: 20260823T000512-f4326427
health_score: 65
generated_at: 2026-08-26T02:44:51Z
total_pages: 15
html_pages: 14
indexable_pages: 14
errors: 0
warnings: 26
notices: 164
---

# SEO audit: tiiiyes.cn

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

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

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 15 |
| HTML pages | 14 |
| Indexable | 14 |
| Non-indexable | 0 |
| Orphan pages | 0 |
| Broken internal links | 0 |
| Avg response time | 5069 ms |
| Errors / Warnings / Notices | 0 / 26 / 164 |
| Status codes | 1×0, 14×200 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Performance | 72 | 0 | 14 | 70 |
| Content | 82 | 0 | 9 | 12 |
| Structured Data | 96 | 0 | 2 | 11 |
| Crawlability | 98 | 0 | 1 | 0 |
| Agent Readiness | 100 | 0 | 0 | 12 |
| Images | 100 | 0 | 0 | 14 |
| Meta Description | 100 | 0 | 0 | 3 |
| Security | 100 | 0 | 0 | 14 |
| Social | 100 | 0 | 0 | 28 |

## Issues

### Warnings (26)

#### Thin content (low word count)

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

- [https://www.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/) — 164 words
- [https://www.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/) — 136 words
- [https://www.tiiiyes.cn/news/](https://www.tiiiyes.cn/news/) — 138 words
- [https://www.tiiiyes.cn/products/](https://www.tiiiyes.cn/products/) — 154 words
- [https://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/) — 158 words
- [https://www.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/) — 152 words
- [https://www.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/) — 135 words
- [https://www.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/) — 126 words
- [https://www.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/) — 155 words

#### Incomplete/empty response after retries (likely transient — re-crawl)

- Rule: `fetch.incomplete` · Category: Crawlability · Occurrences: 1

- [https://www.tiiiyes.cn/cases/](https://www.tiiiyes.cn/cases/) — context deadline exceeded after 3 attempts

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

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

- [https://www.tiiiyes.cn/](https://www.tiiiyes.cn/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tiiiyes.cn/app/](https://www.tiiiyes.cn/app/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tiiiyes.cn/compare/](https://www.tiiiyes.cn/compare/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tiiiyes.cn/news/](https://www.tiiiyes.cn/news/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tiiiyes.cn/product/t5/](https://www.tiiiyes.cn/product/t5/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tiiiyes.cn/products/](https://www.tiiiyes.cn/products/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://www.tiiiyes.cn/technology/](https://www.tiiiyes.cn/technology/) — 2 render-blocking <script> in <head> (add defer/async or use type=module)

#### Rich-result schema missing required properties

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

- [https://www.tiiiyes.cn/](https://www.tiiiyes.cn/) — Organization missing: url

#### Product schema missing required or recommended properties

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

- [https://www.tiiiyes.cn/product/t5/](https://www.tiiiyes.cn/product/t5/) — Product structured data is missing required properties (offers.price, offers.priceCurrency) — without them Google won't generate the rich result. Add each field (and validate with the Rich Results Test). It is also missing recommended properties (sku\|gtin, aggregateRating, review), which enrich the result.

### Notices (164)

#### Heading levels skip a level

- Rule: `agent.heading_skip` · Category: Agent Readiness · Occurrences: 11

- [https://www.tiiiyes.cn/app/](https://www.tiiiyes.cn/app/) — h4 follows h2 — skips h3
- [https://www.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/) — h4 follows h2 — skips h3
- [https://www.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/) — h4 follows h2 — skips h3
- [https://www.tiiiyes.cn/news/](https://www.tiiiyes.cn/news/) — h4 follows h2 — skips h3
- [https://www.tiiiyes.cn/products/](https://www.tiiiyes.cn/products/) — h4 follows h2 — skips h3
- [https://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/) — h4 follows h2 — skips h3
- [https://www.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/) — h4 follows h2 — skips h3
- [https://www.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/) — h4 follows h2 — skips h3
- [https://www.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/) — h3 follows h1 — skips h2
- [https://www.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/) — h4 follows h2 — skips h3
- [https://www.tiiiyes.cn/technology/](https://www.tiiiyes.cn/technology/) — h3 follows h1 — skips h2

#### No llms.txt for AI agents

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

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

#### Likely hero image lacks fetchpriority=high

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

- [https://www.tiiiyes.cn/](https://www.tiiiyes.cn/) — the likely hero/LCP image (logo-white.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tiiiyes.cn/app/](https://www.tiiiyes.cn/app/) — the likely hero/LCP image (logo-white.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/) — the likely hero/LCP image (logo-white.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tiiiyes.cn/compare/](https://www.tiiiyes.cn/compare/) — the likely hero/LCP image (logo-white.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/) — the likely hero/LCP image (logo-white.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tiiiyes.cn/news/](https://www.tiiiyes.cn/news/) — the likely hero/LCP image (logo-white.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tiiiyes.cn/product/t5/](https://www.tiiiyes.cn/product/t5/) — the likely hero/LCP image (logo-white.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tiiiyes.cn/products/](https://www.tiiiyes.cn/products/) — the likely hero/LCP image (logo-white.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/) — the likely hero/LCP image (logo-white.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/) — the likely hero/LCP image (logo-white.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/) — the likely hero/LCP image (logo-white.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/) — the likely hero/LCP image (logo-white.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/) — the likely hero/LCP image (logo-white.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- [https://www.tiiiyes.cn/technology/](https://www.tiiiyes.cn/technology/) — the likely hero/LCP image (logo-white.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: 14

- [https://www.tiiiyes.cn/](https://www.tiiiyes.cn/) — 27 of 27 images without width/height
- [https://www.tiiiyes.cn/app/](https://www.tiiiyes.cn/app/) — 12 of 12 images without width/height
- [https://www.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/) — 11 of 11 images without width/height
- [https://www.tiiiyes.cn/compare/](https://www.tiiiyes.cn/compare/) — 5 of 5 images without width/height
- [https://www.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/) — 3 of 3 images without width/height
- [https://www.tiiiyes.cn/news/](https://www.tiiiyes.cn/news/) — 8 of 8 images without width/height
- [https://www.tiiiyes.cn/product/t5/](https://www.tiiiyes.cn/product/t5/) — 22 of 22 images without width/height
- [https://www.tiiiyes.cn/products/](https://www.tiiiyes.cn/products/) — 5 of 5 images without width/height
- [https://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/) — 4 of 4 images without width/height
- [https://www.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/) — 4 of 4 images without width/height
- [https://www.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/) — 4 of 4 images without width/height
- [https://www.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/) — 3 of 3 images without width/height
- [https://www.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/) — 7 of 7 images without width/height
- [https://www.tiiiyes.cn/technology/](https://www.tiiiyes.cn/technology/) — 9 of 9 images without width/height

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

- Rule: `meta.keywords_present` · Category: Content · Occurrences: 12

- [https://www.tiiiyes.cn/](https://www.tiiiyes.cn/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://www.tiiiyes.cn/app/](https://www.tiiiyes.cn/app/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://www.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://www.tiiiyes.cn/compare/](https://www.tiiiyes.cn/compare/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://www.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://www.tiiiyes.cn/news/](https://www.tiiiyes.cn/news/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://www.tiiiyes.cn/product/t5/](https://www.tiiiyes.cn/product/t5/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://www.tiiiyes.cn/products/](https://www.tiiiyes.cn/products/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://www.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://www.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- [https://www.tiiiyes.cn/technology/](https://www.tiiiyes.cn/technology/) — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt

#### Meta description too long

- Rule: `meta_desc.too_long` · Category: Meta Description · Occurrences: 1

- [https://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/) — 192 chars

#### Meta description too short

- Rule: `meta_desc.too_short` · Category: Meta Description · Occurrences: 2

- [https://www.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/) — 40 chars
- [https://www.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/) — 32 chars

#### Missing Open Graph tags

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

- [https://www.tiiiyes.cn/](https://www.tiiiyes.cn/) — og:title, og:description, og:image
- [https://www.tiiiyes.cn/app/](https://www.tiiiyes.cn/app/) — og:title, og:description, og:image
- [https://www.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/) — og:title, og:description, og:image
- [https://www.tiiiyes.cn/compare/](https://www.tiiiyes.cn/compare/) — og:title, og:description, og:image
- [https://www.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/) — og:title, og:description, og:image
- [https://www.tiiiyes.cn/news/](https://www.tiiiyes.cn/news/) — og:title, og:description, og:image
- [https://www.tiiiyes.cn/product/t5/](https://www.tiiiyes.cn/product/t5/) — og:title, og:description, og:image
- [https://www.tiiiyes.cn/products/](https://www.tiiiyes.cn/products/) — og:title, og:description, og:image
- [https://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/) — og:title, og:description, og:image
- [https://www.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/) — og:title, og:description, og:image
- [https://www.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/) — og:title, og:description, og:image
- [https://www.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/) — og:title, og:description, og:image
- [https://www.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/) — og:title, og:description, og:image
- [https://www.tiiiyes.cn/technology/](https://www.tiiiyes.cn/technology/) — 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://www.tiiiyes.cn/](https://www.tiiiyes.cn/) — 24 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.tiiiyes.cn/app/](https://www.tiiiyes.cn/app/) — 9 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/) — 10 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.tiiiyes.cn/compare/](https://www.tiiiyes.cn/compare/) — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/) — 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.tiiiyes.cn/news/](https://www.tiiiyes.cn/news/) — 7 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.tiiiyes.cn/product/t5/](https://www.tiiiyes.cn/product/t5/) — 21 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.tiiiyes.cn/products/](https://www.tiiiyes.cn/products/) — 4 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/) — 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.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/) — 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.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/) — 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.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/) — 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.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/) — 6 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://www.tiiiyes.cn/technology/](https://www.tiiiyes.cn/technology/) — 8 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.

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

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

- [https://www.tiiiyes.cn/](https://www.tiiiyes.cn/) — 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.tiiiyes.cn/app/](https://www.tiiiyes.cn/app/) — 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.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/) — 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.tiiiyes.cn/compare/](https://www.tiiiyes.cn/compare/) — 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.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/) — 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.tiiiyes.cn/news/](https://www.tiiiyes.cn/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.tiiiyes.cn/product/t5/](https://www.tiiiyes.cn/product/t5/) — 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.tiiiyes.cn/products/](https://www.tiiiyes.cn/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://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/) — 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.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/) — 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.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/) — 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.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/) — 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.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/) — 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.tiiiyes.cn/technology/](https://www.tiiiyes.cn/technology/) — 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://www.tiiiyes.cn/](https://www.tiiiyes.cn/) — 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.tiiiyes.cn/app/](https://www.tiiiyes.cn/app/) — 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.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/) — 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.tiiiyes.cn/compare/](https://www.tiiiyes.cn/compare/) — 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.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/) — 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.tiiiyes.cn/news/](https://www.tiiiyes.cn/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.tiiiyes.cn/product/t5/](https://www.tiiiyes.cn/product/t5/) — 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.tiiiyes.cn/products/](https://www.tiiiyes.cn/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://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/) — 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.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/) — 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.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/) — 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.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/) — 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.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/) — 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.tiiiyes.cn/technology/](https://www.tiiiyes.cn/technology/) — 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.

#### Slow server response

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

- [https://www.tiiiyes.cn/](https://www.tiiiyes.cn/) — 5512 ms
- [https://www.tiiiyes.cn/app/](https://www.tiiiyes.cn/app/) — 5172 ms
- [https://www.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/) — 5089 ms
- [https://www.tiiiyes.cn/compare/](https://www.tiiiyes.cn/compare/) — 4886 ms
- [https://www.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/) — 4912 ms
- [https://www.tiiiyes.cn/news/](https://www.tiiiyes.cn/news/) — 4831 ms
- [https://www.tiiiyes.cn/product/t5/](https://www.tiiiyes.cn/product/t5/) — 4882 ms
- [https://www.tiiiyes.cn/products/](https://www.tiiiyes.cn/products/) — 5084 ms
- [https://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/) — 4949 ms
- [https://www.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/) — 5199 ms
- [https://www.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/) — 5182 ms
- [https://www.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/) — 4932 ms
- [https://www.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/) — 5005 ms
- [https://www.tiiiyes.cn/technology/](https://www.tiiiyes.cn/technology/) — 5341 ms

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

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

- [https://www.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/) — FAQPage structured data is present — Google removed FAQ rich results on 7 May 2026 (except for authoritative government/health sites). The markup is harmless but earns no SERP enhancement; remove it during template maintenance.

#### No structured data detected

- Rule: `schema.none` · Category: Structured Data · Occurrences: 10

- [https://www.tiiiyes.cn/app/](https://www.tiiiyes.cn/app/)
- [https://www.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/)
- [https://www.tiiiyes.cn/compare/](https://www.tiiiyes.cn/compare/)
- [https://www.tiiiyes.cn/news/](https://www.tiiiyes.cn/news/)
- [https://www.tiiiyes.cn/products/](https://www.tiiiyes.cn/products/)
- [https://www.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/)
- [https://www.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/)
- [https://www.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/)
- [https://www.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/)
- [https://www.tiiiyes.cn/technology/](https://www.tiiiyes.cn/technology/)

#### Missing recommended security headers

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

- [https://www.tiiiyes.cn/](https://www.tiiiyes.cn/) — CSP, X-Content-Type-Options
- [https://www.tiiiyes.cn/app/](https://www.tiiiyes.cn/app/) — CSP, X-Content-Type-Options
- [https://www.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/) — CSP, X-Content-Type-Options
- [https://www.tiiiyes.cn/compare/](https://www.tiiiyes.cn/compare/) — CSP, X-Content-Type-Options
- [https://www.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/) — CSP, X-Content-Type-Options
- [https://www.tiiiyes.cn/news/](https://www.tiiiyes.cn/news/) — CSP, X-Content-Type-Options
- [https://www.tiiiyes.cn/product/t5/](https://www.tiiiyes.cn/product/t5/) — CSP, X-Content-Type-Options
- [https://www.tiiiyes.cn/products/](https://www.tiiiyes.cn/products/) — X-Content-Type-Options, CSP
- [https://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/) — CSP, X-Content-Type-Options
- [https://www.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/) — CSP, X-Content-Type-Options
- [https://www.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/) — CSP, X-Content-Type-Options
- [https://www.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/) — CSP, X-Content-Type-Options
- [https://www.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/) — CSP, X-Content-Type-Options
- [https://www.tiiiyes.cn/technology/](https://www.tiiiyes.cn/technology/) — CSP, X-Content-Type-Options

#### Missing Twitter Card tag

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

- [https://www.tiiiyes.cn/](https://www.tiiiyes.cn/)
- [https://www.tiiiyes.cn/app/](https://www.tiiiyes.cn/app/)
- [https://www.tiiiyes.cn/certifications/](https://www.tiiiyes.cn/certifications/)
- [https://www.tiiiyes.cn/compare/](https://www.tiiiyes.cn/compare/)
- [https://www.tiiiyes.cn/faq/](https://www.tiiiyes.cn/faq/)
- [https://www.tiiiyes.cn/news/](https://www.tiiiyes.cn/news/)
- [https://www.tiiiyes.cn/product/t5/](https://www.tiiiyes.cn/product/t5/)
- [https://www.tiiiyes.cn/products/](https://www.tiiiyes.cn/products/)
- [https://www.tiiiyes.cn/reports/](https://www.tiiiyes.cn/reports/)
- [https://www.tiiiyes.cn/science-negative-ion/](https://www.tiiiyes.cn/science-negative-ion/)
- [https://www.tiiiyes.cn/science-schumann/](https://www.tiiiyes.cn/science-schumann/)
- [https://www.tiiiyes.cn/service/](https://www.tiiiyes.cn/service/)
- [https://www.tiiiyes.cn/story/](https://www.tiiiyes.cn/story/)
- [https://www.tiiiyes.cn/technology/](https://www.tiiiyes.cn/technology/)

## Checks & coverage

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

- ✗ Agent Readiness — 12 notice(s)
- ✓ AI Content — clean
- ✓ Amp — clean
- ✓ Budget — clean
- ✓ Cache — clean
- ✓ Canonical — clean
- ✗ Content — 9 warning(s), 12 notice(s)
- ✗ Crawlability — 1 warning(s)
- ✓ Duplicate — clean
- ✓ Geo — clean
- ✓ Headings — clean
- ✓ Hreflang — clean
- ✗ Images — 14 notice(s)
- ✓ Indexability — clean
- ✓ Links — clean
- ✗ Meta Description — 3 notice(s)
- ✓ Mobile — clean
- ✗ Performance — 14 warning(s), 70 notice(s)
- ✓ Rendering — clean
- ✓ Robots — clean
- ✗ Security — 14 notice(s)
- ✓ Sitemap — clean
- ✗ Social — 28 notice(s)
- ✗ Structured Data — 2 warning(s), 11 notice(s)
- ✓ Titles — clean
- ✓ URL — clean
- ✓ Video — clean

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

## 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
