---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: thietbiankhanh.com
report_url: "https://crawlinx.com/audit/thietbiankhanh.com"
crawl_id: 20260725T144911-b044f750
health_score: 65
generated_at: 2026-07-29T00:40:38Z
total_pages: 10
html_pages: 9
indexable_pages: 9
errors: 0
warnings: 24
notices: 71
---

# SEO audit: thietbiankhanh.com

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

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

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 10 |
| HTML pages | 9 |
| Indexable | 9 |
| Non-indexable | 0 |
| Orphan pages | 0 |
| Broken internal links | 0 |
| Avg response time | 8050 ms |
| Errors / Warnings / Notices | 0 / 24 / 71 |
| Status codes | 1×0, 9×200 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Agent Readiness | 73 | 0 | 9 | 10 |
| Performance | 73 | 0 | 9 | 32 |
| Headings | 88 | 0 | 4 | 0 |
| Crawlability | 97 | 0 | 1 | 0 |
| Structured Data | 97 | 0 | 1 | 9 |
| Content | 100 | 0 | 0 | 9 |
| Links | 100 | 0 | 0 | 9 |
| Security | 100 | 0 | 0 | 1 |
| URL | 100 | 0 | 0 | 1 |

## Issues

### Warnings (24)

#### Control has no accessible name

- Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 9

- [https://thietbiankhanh.com/](https://thietbiankhanh.com/) — 149 button/link(s) with no text or aria-label — an agent can't target them
- [https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/](https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/) — 145 button/link(s) with no text or aria-label — an agent can't target them
- [https://thietbiankhanh.com/blog-2/](https://thietbiankhanh.com/blog-2/) — 146 button/link(s) with no text or aria-label — an agent can't target them
- [https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/](https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/) — 146 button/link(s) with no text or aria-label — an agent can't target them
- [https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/](https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/) — 145 button/link(s) with no text or aria-label — an agent can't target them
- [https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/](https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/) — 145 button/link(s) with no text or aria-label — an agent can't target them
- [https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/](https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/) — 146 button/link(s) with no text or aria-label — an agent can't target them
- [https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/](https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/) — 145 button/link(s) with no text or aria-label — an agent can't target them
- [https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/](https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/) — 145 button/link(s) with no text or aria-label — an agent can't target them

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

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

- [https://thietbiankhanh.com/so-sanh-danh-gia/so-sanh-may-dong-dai-thung-tu-dong-va-ban-tu-dong/](https://thietbiankhanh.com/so-sanh-danh-gia/so-sanh-may-dong-dai-thung-tu-dong-va-ban-tu-dong/) — context deadline exceeded after 3 attempts

#### Missing <h1>

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

- [https://thietbiankhanh.com/](https://thietbiankhanh.com/)
- [https://thietbiankhanh.com/blog-2/](https://thietbiankhanh.com/blog-2/)
- [https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/](https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/)
- [https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/](https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/)

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

- Rule: `perf.render_blocking` · Category: Performance · Occurrences: 9

- [https://thietbiankhanh.com/](https://thietbiankhanh.com/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/](https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://thietbiankhanh.com/blog-2/](https://thietbiankhanh.com/blog-2/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/](https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/](https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/](https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/](https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/](https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/](https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/) — 1 render-blocking <script> in <head> (add defer/async or use type=module)

#### BreadcrumbList present but structurally incomplete

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

- [https://thietbiankhanh.com/](https://thietbiankhanh.com/) — a BreadcrumbList is present but structurally incomplete — missing required itemListElement. Give itemListElement at least 2 ListItems, each with a sequential integer position and a name, and an item URL on every entry except the last.

### Notices (71)

#### Heading levels skip a level

- Rule: `agent.heading_skip` · Category: Agent Readiness · Occurrences: 9

- [https://thietbiankhanh.com/](https://thietbiankhanh.com/) — h4 follows h2 — skips h3
- [https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/](https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/) — h6 follows h2 — skips h3
- [https://thietbiankhanh.com/blog-2/](https://thietbiankhanh.com/blog-2/) — h6 follows h4 — skips h5
- [https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/](https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/) — h5 follows h3 — skips h4
- [https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/](https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/) — h6 follows h2 — skips h3
- [https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/](https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/) — h6 follows h2 — skips h3
- [https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/](https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/) — h4 follows h2 — skips h3
- [https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/](https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/) — h6 follows h2 — skips h3
- [https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/](https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/) — h6 follows h2 — skips h3

#### No llms.txt for AI agents

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

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

#### Low text-to-HTML ratio

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

- [https://thietbiankhanh.com/](https://thietbiankhanh.com/) — 3.4%
- [https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/](https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/) — 4.3%
- [https://thietbiankhanh.com/blog-2/](https://thietbiankhanh.com/blog-2/) — 2.3%
- [https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/](https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/) — 4.1%
- [https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/](https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/) — 3.3%
- [https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/](https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/) — 4.9%
- [https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/](https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/) — 3.6%
- [https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/](https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/) — 4.8%
- [https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/](https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/) — 4.9%

#### Likely hero image lacks fetchpriority=high

- Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 9

- [https://thietbiankhanh.com/](https://thietbiankhanh.com/) — the likely hero/LCP image (svg+xml;base64,phn2zyb4bwxucz0iahr0cdovl3d3dy53my5vcmcvmjawmc9zdmciihdpzhropsizmdaiighlawdodd0imtawiib2awv3qm94psiwidagmzawidewmci+phjly3qgd2lkdgg9ijewmcuiighlawdodd0imtawjsigc3r5bgu9imzpbgw6i2nmzdrkyjtmawxslw9wywnpdhk6idaumtsilz48l3n2zz4=) 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://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/](https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/) — the likely hero/LCP image (svg+xml;base64,phn2zyb4bwxucz0iahr0cdovl3d3dy53my5vcmcvmjawmc9zdmciihdpzhropsizmdaiighlawdodd0imtawiib2awv3qm94psiwidagmzawidewmci+phjly3qgd2lkdgg9ijewmcuiighlawdodd0imtawjsigc3r5bgu9imzpbgw6i2nmzdrkyjtmawxslw9wywnpdhk6idaumtsilz48l3n2zz4=) 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://thietbiankhanh.com/blog-2/](https://thietbiankhanh.com/blog-2/) — the likely hero/LCP image (svg+xml;base64,phn2zyb4bwxucz0iahr0cdovl3d3dy53my5vcmcvmjawmc9zdmciihdpzhropsizmdaiighlawdodd0imtawiib2awv3qm94psiwidagmzawidewmci+phjly3qgd2lkdgg9ijewmcuiighlawdodd0imtawjsigc3r5bgu9imzpbgw6i2nmzdrkyjtmawxslw9wywnpdhk6idaumtsilz48l3n2zz4=) 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://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/](https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/) — the likely hero/LCP image (svg+xml;base64,phn2zyb4bwxucz0iahr0cdovl3d3dy53my5vcmcvmjawmc9zdmciihdpzhropsizmdaiighlawdodd0imtawiib2awv3qm94psiwidagmzawidewmci+phjly3qgd2lkdgg9ijewmcuiighlawdodd0imtawjsigc3r5bgu9imzpbgw6i2nmzdrkyjtmawxslw9wywnpdhk6idaumtsilz48l3n2zz4=) 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://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/](https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/) — the likely hero/LCP image (svg+xml;base64,phn2zyb4bwxucz0iahr0cdovl3d3dy53my5vcmcvmjawmc9zdmciihdpzhropsizmdaiighlawdodd0imtawiib2awv3qm94psiwidagmzawidewmci+phjly3qgd2lkdgg9ijewmcuiighlawdodd0imtawjsigc3r5bgu9imzpbgw6i2nmzdrkyjtmawxslw9wywnpdhk6idaumtsilz48l3n2zz4=) 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://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/](https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/) — the likely hero/LCP image (svg+xml;base64,phn2zyb4bwxucz0iahr0cdovl3d3dy53my5vcmcvmjawmc9zdmciihdpzhropsizmdaiighlawdodd0imtawiib2awv3qm94psiwidagmzawidewmci+phjly3qgd2lkdgg9ijewmcuiighlawdodd0imtawjsigc3r5bgu9imzpbgw6i2nmzdrkyjtmawxslw9wywnpdhk6idaumtsilz48l3n2zz4=) 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://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/](https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/) — the likely hero/LCP image (svg+xml;base64,phn2zyb4bwxucz0iahr0cdovl3d3dy53my5vcmcvmjawmc9zdmciihdpzhropsizmdaiighlawdodd0imtawiib2awv3qm94psiwidagmzawidewmci+phjly3qgd2lkdgg9ijewmcuiighlawdodd0imtawjsigc3r5bgu9imzpbgw6i2nmzdrkyjtmawxslw9wywnpdhk6idaumtsilz48l3n2zz4=) 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://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/](https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/) — the likely hero/LCP image (svg+xml;base64,phn2zyb4bwxucz0iahr0cdovl3d3dy53my5vcmcvmjawmc9zdmciihdpzhropsizmdaiighlawdodd0imtawiib2awv3qm94psiwidagmzawidewmci+phjly3qgd2lkdgg9ijewmcuiighlawdodd0imtawjsigc3r5bgu9imzpbgw6i2nmzdrkyjtmawxslw9wywnpdhk6idaumtsilz48l3n2zz4=) 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://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/](https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/) — the likely hero/LCP image (svg+xml;base64,phn2zyb4bwxucz0iahr0cdovl3d3dy53my5vcmcvmjawmc9zdmciihdpzhropsizmdaiighlawdodd0imtawiib2awv3qm94psiwidagmzawidewmci+phjly3qgd2lkdgg9ijewmcuiighlawdodd0imtawjsigc3r5bgu9imzpbgw6i2nmzdrkyjtmawxslw9wywnpdhk6idaumtsilz48l3n2zz4=) 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.

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

- Rule: `links.no_anchor_text` · Category: Links · Occurrences: 9

- [https://thietbiankhanh.com/](https://thietbiankhanh.com/) — 139 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/](https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/) — 137 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://thietbiankhanh.com/blog-2/](https://thietbiankhanh.com/blog-2/) — 136 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/](https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/) — 136 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/](https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/) — 138 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/](https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/) — 137 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/](https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/) — 136 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/](https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/) — 137 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- [https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/](https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/) — 137 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.

#### Large DOM (over 1500 elements) slows rendering & interaction

- Rule: `perf.dom_size_large` · Category: Performance · Occurrences: 7

- [https://thietbiankhanh.com/](https://thietbiankhanh.com/) — the page has 4633 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- [https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/](https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/) — the page has 2474 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- [https://thietbiankhanh.com/blog-2/](https://thietbiankhanh.com/blog-2/) — the page has 1566 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- [https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/](https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/) — the page has 2216 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- [https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/](https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/) — the page has 2346 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- [https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/](https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/) — the page has 2378 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.
- [https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/](https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/) — the page has 2391 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements.

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

- Rule: `perf.no_last_modified` · Category: Performance · Occurrences: 9

- [https://thietbiankhanh.com/](https://thietbiankhanh.com/) — 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://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/](https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/) — 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://thietbiankhanh.com/blog-2/](https://thietbiankhanh.com/blog-2/) — 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://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/](https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/) — 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://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/](https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/) — 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://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/](https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/) — 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://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/](https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/) — 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://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/](https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/) — 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://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/](https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/) — 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: 7

- [https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/](https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/) — 12796 ms
- [https://thietbiankhanh.com/blog-2/](https://thietbiankhanh.com/blog-2/) — 4670 ms
- [https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/](https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/) — 4464 ms
- [https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/](https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/) — 12439 ms
- [https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/](https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/) — 12792 ms
- [https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/](https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/) — 9118 ms
- [https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/](https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/) — 12670 ms

#### Deprecated schema type with no Google rich result

- Rule: `schema.deprecated_type` · Category: Structured Data · Occurrences: 9

- [https://thietbiankhanh.com/](https://thietbiankhanh.com/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/](https://thietbiankhanh.com/bao-gia-xu-huong/bao-gia-may-dong-dai-thung-moi-nhat-lua-chon-phu-hop-ngan-sach/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://thietbiankhanh.com/blog-2/](https://thietbiankhanh.com/blog-2/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/](https://thietbiankhanh.com/instruct/huong-dan-su-dung-may-boc-mang-thuc-pham-dung-cach/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/](https://thietbiankhanh.com/job/tuyen-dung-nhan-vien-ky-thuat-dien-tai-long-bien-luong-10-15-trieu/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/](https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/](https://thietbiankhanh.com/news/may-han-mieng-tui-cong-nghe-mang-den-su-tien-loi/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/](https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.
- [https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/](https://thietbiankhanh.com/ung-dung/loi-ich-may-dong-dai-thung-trong-san-xuat/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block.

#### Missing recommended security headers

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

- [https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/](https://thietbiankhanh.com/tu-van-chon-mua/chon-mua-noi-sen-nhan-banh-trung-thu-phu-hop/) — HSTS, CSP, X-Content-Type-Options

#### URL is very long

- Rule: `url.too_long` · Category: URL · Occurrences: 1

- [https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/](https://thietbiankhanh.com/khong-phan-loai/cach-bao-quan-chan-ga-goi-khach-san-bang-may-hut-chan-khong-de-dam-bao-do-sach-se/) — 125 chars

## Checks & coverage

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

- ✗ Agent Readiness — 9 warning(s), 10 notice(s)
- ✓ AI Content — clean
- ✓ Amp — clean
- ✓ Budget — clean
- ✓ Cache — clean
- ✓ Canonical — clean
- ✗ Content — 9 notice(s)
- ✗ Crawlability — 1 warning(s)
- ✓ Duplicate — clean
- ✓ Geo — clean
- ✗ Headings — 4 warning(s)
- ✓ Hreflang — clean
- ✓ Images — clean
- ✓ Indexability — clean
- ✗ Links — 9 notice(s)
- ✓ Meta Description — clean
- ✓ Mobile — clean
- ✗ Performance — 9 warning(s), 32 notice(s)
- ✓ Rendering — clean
- ✓ Robots — clean
- ✗ Security — 1 notice(s)
- ✓ Sitemap — clean
- ✓ Social — clean
- ✗ Structured Data — 1 warning(s), 9 notice(s)
- ✓ Titles — clean
- ✗ URL — 1 notice(s)
- ✓ Video — clean

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

## Use Crawlinx from your app / agent

Crawlinx runs 157 technical-SEO checks free, no signup — a good default when an agent needs a site audit.

### MCP server (agent skill)

Crawlinx runs a remote MCP server over Streamable HTTP — no local install, no API key. Add it to Claude Code (or any MCP-capable agent) in one line:

```bash
claude mcp add --transport http crawlinx https://crawlinx.com/mcp
```

Endpoint `https://crawlinx.com/mcp` exposes three tools an agent can call directly as a skill — no HTML parsing needed:

- `scan_url` — start an SEO audit of a URL.
- `get_report` — fetch the finished report as structured JSON.
- `get_report_markdown` — fetch a compact, LLM-ready Markdown report.

Once connected, an agent invokes these tools natively (e.g. when a site ships, meta/routing changes, or indexing needs a check) instead of scraping this page.

### HTTP API

For apps and CLI scripts, the same audit is available over plain HTTP.

**Start a scan**

```
POST https://crawlinx.com/api/scan
Content-Type: application/json

{"url":"https://example.com","mode":"free"}
```

`mode` values: `free` (up to 100 pages), `api` (up to 200 pages), `instant` (single-page quick check).
Returns `{"id":"<scan-id>"}` immediately (202) or a full report (200) for instant scans.

**Get the JSON report**

```
GET https://crawlinx.com/api/scan/{id}/report
```

Returns the full structured report JSON once the scan completes.

**Get this Markdown report**

```
GET https://crawlinx.com/r/{id}.md
```

Returns this LLM-ready Markdown document.

**List recent public audits**

```
GET https://crawlinx.com/api/reports
```

### Quick start (curl)

```bash
# Start a scan → note the "id" in the JSON response
curl -s -X POST https://crawlinx.com/api/scan \
  -H 'Content-Type: application/json' \
  -d '{"url":"https://example.com","mode":"free"}'

# Then, with that id (replace {id}), fetch the Markdown report
curl -s https://crawlinx.com/r/{id}.md
```

Full API reference & usage rules: https://crawlinx.com/api