---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: truongthinhplastic.com
report_url: "https://crawlinx.com/audit/truongthinhplastic.com"
crawl_id: 20260724T222315-7ca8b969
health_score: 65
generated_at: 2026-07-29T00:39:29Z
total_pages: 11
html_pages: 10
indexable_pages: 10
errors: 0
warnings: 45
notices: 102
---

# SEO audit: truongthinhplastic.com

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

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

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 11 |
| HTML pages | 10 |
| Indexable | 10 |
| Non-indexable | 0 |
| Orphan pages | 0 |
| Broken internal links | 0 |
| Avg response time | 6790 ms |
| Errors / Warnings / Notices | 0 / 45 / 102 |
| Status codes | 1×0, 10×200 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Agent Readiness | 73 | 0 | 10 | 9 |
| Links | 73 | 0 | 10 | 10 |
| Performance | 73 | 0 | 10 | 48 |
| Headings | 75 | 0 | 9 | 0 |
| Meta Description | 95 | 0 | 2 | 5 |
| Titles | 95 | 0 | 2 | 0 |
| Crawlability | 97 | 0 | 1 | 1 |
| Structured Data | 97 | 0 | 1 | 10 |
| Content | 100 | 0 | 0 | 1 |
| Images | 100 | 0 | 0 | 1 |
| Security | 100 | 0 | 0 | 10 |
| Social | 100 | 0 | 0 | 6 |
| URL | 100 | 0 | 0 | 1 |

## Issues

### Warnings (45)

#### Control has no accessible name

- Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 10

- [https://truongthinhplastic.com/](https://truongthinhplastic.com/) — 23 button/link(s) with no text or aria-label — an agent can't target them
- [https://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/) — 10 button/link(s) with no text or aria-label — an agent can't target them
- [https://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/) — 9 button/link(s) with no text or aria-label — an agent can't target them
- [https://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — 9 button/link(s) with no text or aria-label — an agent can't target them
- [https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — 11 button/link(s) with no text or aria-label — an agent can't target them
- [https://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/) — 9 button/link(s) with no text or aria-label — an agent can't target them
- [https://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — 9 button/link(s) with no text or aria-label — an agent can't target them
- [https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/](https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/) — 15 button/link(s) with no text or aria-label — an agent can't target them
- [https://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/) — 23 button/link(s) with no text or aria-label — an agent can't target them
- [https://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/) — 13 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://truongthinhplastic.com/2025/01/15/](https://truongthinhplastic.com/2025/01/15/) — context deadline exceeded after 3 attempts

#### Missing <h1>

- Rule: `h1.missing` · Category: Headings · Occurrences: 9

- [https://truongthinhplastic.com/](https://truongthinhplastic.com/)
- [https://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/)
- [https://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/)
- [https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/)
- [https://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/)
- [https://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/)
- [https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/](https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/)
- [https://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/)
- [https://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/)

#### Internal link points to a redirect

- Rule: `links.redirect_target` · Category: Links · Occurrences: 10

- [https://truongthinhplastic.com/](https://truongthinhplastic.com/) — https://truongthinhplastic.com/doi-ngu-nhan-su/ → https://truongthinhplastic.com/ve-chung-toi/doi-ngu-nhan-su/
- [https://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/) — https://truongthinhplastic.com/doi-ngu-nhan-su/ → https://truongthinhplastic.com/ve-chung-toi/doi-ngu-nhan-su/
- [https://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/) — https://truongthinhplastic.com/doi-ngu-nhan-su/ → https://truongthinhplastic.com/ve-chung-toi/doi-ngu-nhan-su/
- [https://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — https://truongthinhplastic.com/doi-ngu-nhan-su/ → https://truongthinhplastic.com/ve-chung-toi/doi-ngu-nhan-su/
- [https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — https://truongthinhplastic.com/doi-ngu-nhan-su/ → https://truongthinhplastic.com/ve-chung-toi/doi-ngu-nhan-su/
- [https://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/) — https://truongthinhplastic.com/doi-ngu-nhan-su/ → https://truongthinhplastic.com/ve-chung-toi/doi-ngu-nhan-su/
- [https://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — https://truongthinhplastic.com/doi-ngu-nhan-su/ → https://truongthinhplastic.com/ve-chung-toi/doi-ngu-nhan-su/
- [https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/](https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/) — https://truongthinhplastic.com/doi-ngu-nhan-su/ → https://truongthinhplastic.com/ve-chung-toi/doi-ngu-nhan-su/
- [https://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/) — https://truongthinhplastic.com/doi-ngu-nhan-su/ → https://truongthinhplastic.com/ve-chung-toi/doi-ngu-nhan-su/
- [https://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/) — https://truongthinhplastic.com/doi-ngu-nhan-su/ → https://truongthinhplastic.com/ve-chung-toi/doi-ngu-nhan-su/

#### Missing meta description

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

- [https://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/)
- [https://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/)

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

- Rule: `perf.render_blocking` · Category: Performance · Occurrences: 10

- [https://truongthinhplastic.com/](https://truongthinhplastic.com/) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/](https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/) — 4 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/) — 4 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://truongthinhplastic.com/](https://truongthinhplastic.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.

#### Title likely truncated in SERP (too wide)

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

- [https://truongthinhplastic.com/](https://truongthinhplastic.com/) — 81 chars, ~639px (limit ~580px)
- [https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — 109 chars, ~839px (limit ~580px)

### Notices (102)

#### Heading levels skip a level

- Rule: `agent.heading_skip` · Category: Agent Readiness · Occurrences: 8

- [https://truongthinhplastic.com/](https://truongthinhplastic.com/) — h5 follows h2 — skips h3
- [https://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/) — h4 follows h1 — skips h2
- [https://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/) — h4 follows h2 — skips h3
- [https://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — h5 follows h3 — skips h4
- [https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — h6 follows h3 — skips h4
- [https://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — h5 follows h2 — skips h3
- [https://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/) — h4 follows h2 — skips h3
- [https://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/) — h5 follows h3 — skips h4

#### No llms.txt for AI agents

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

- [https://truongthinhplastic.com/](https://truongthinhplastic.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: 1

- [https://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/) — 5.0%

#### Likely hero image lacks fetchpriority=high

- Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 7

- [https://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/) — the likely hero/LCP image (logo_truongthinh.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://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — the likely hero/LCP image (logo_truongthinh.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://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — the likely hero/LCP image (logo_truongthinh.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://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/) — the likely hero/LCP image (logo_truongthinh.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://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — the likely hero/LCP image (logo_truongthinh.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://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/) — the likely hero/LCP image (logo_truongthinh.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://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/) — the likely hero/LCP image (logo_truongthinh.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.

#### Images without width/height (layout shift / CLS)

- Rule: `images.missing_dimensions` · Category: Images · Occurrences: 1

- [https://truongthinhplastic.com/](https://truongthinhplastic.com/) — 3 of 30 images without width/height

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

- Rule: `links.no_anchor_text` · Category: Links · Occurrences: 10

- [https://truongthinhplastic.com/](https://truongthinhplastic.com/) — 9 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://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/) — 5 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://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/) — 5 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://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — 5 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://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — 5 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://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/) — 5 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://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — 5 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://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/](https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/) — 6 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://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/) — 14 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://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/) — 5 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.

#### Meta description too long

- Rule: `meta_desc.too_long` · Category: Meta Description · Occurrences: 5

- [https://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — 273 chars
- [https://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/) — 267 chars
- [https://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — 248 chars
- [https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/](https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/) — 929 chars
- [https://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/) — 271 chars

#### Missing Open Graph tags

- Rule: `og.missing` · Category: Social · Occurrences: 6

- [https://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/) — og:description, og:image
- [https://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/) — og:image
- [https://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — og:image
- [https://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/) — og:image
- [https://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — og:image
- [https://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/) — og:description, og:image

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

- Rule: `perf.dom_size_large` · Category: Performance · Occurrences: 1

- [https://truongthinhplastic.com/](https://truongthinhplastic.com/) — the page has 1582 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.

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

- Rule: `perf.images_legacy_format` · Category: Performance · Occurrences: 10

- [https://truongthinhplastic.com/](https://truongthinhplastic.com/) — 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://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/) — 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://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — 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://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — 5 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://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/) — 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://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — 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://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/](https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/) — 3 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- [https://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/) — 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://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/) — 5 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: 10

- [https://truongthinhplastic.com/](https://truongthinhplastic.com/) — 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://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/) — 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://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/) — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- [https://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — 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://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — 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://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/) — 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://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — 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://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/](https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/) — 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://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/) — 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://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/) — 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: 10

- [https://truongthinhplastic.com/](https://truongthinhplastic.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://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/) — 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://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — 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://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — 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://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/) — 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://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — 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://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/](https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/) — 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://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/) — 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://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/) — 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: 10

- [https://truongthinhplastic.com/](https://truongthinhplastic.com/) — 6518 ms
- [https://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/) — 5753 ms
- [https://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/) — 10764 ms
- [https://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — 6694 ms
- [https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — 6172 ms
- [https://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/) — 6221 ms
- [https://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — 6246 ms
- [https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/](https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/) — 6396 ms
- [https://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/) — 6058 ms
- [https://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/) — 7086 ms

#### URL redirects to another URL

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

- [https://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — redirects to https://truongthinhplastic.com/ve-chung-toi/doi-ngu-nhan-su/

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

- Rule: `schema.deprecated_type` · Category: Structured Data · Occurrences: 10

- [https://truongthinhplastic.com/](https://truongthinhplastic.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://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/) — 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://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/) — 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://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — 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://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — 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://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/) — 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://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — 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://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/](https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/) — 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://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/) — 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://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/) — 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: 10

- [https://truongthinhplastic.com/](https://truongthinhplastic.com/) — X-Content-Type-Options, HSTS, CSP
- [https://truongthinhplastic.com/category/su-kien/](https://truongthinhplastic.com/category/su-kien/) — HSTS, CSP, X-Content-Type-Options
- [https://truongthinhplastic.com/contact/](https://truongthinhplastic.com/contact/) — HSTS, CSP, X-Content-Type-Options
- [https://truongthinhplastic.com/doi-ngu-nhan-su/](https://truongthinhplastic.com/doi-ngu-nhan-su/) — CSP, X-Content-Type-Options, HSTS
- [https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — X-Content-Type-Options, HSTS, CSP
- [https://truongthinhplastic.com/nang-luc-nha-may/](https://truongthinhplastic.com/nang-luc-nha-may/) — HSTS, CSP, X-Content-Type-Options
- [https://truongthinhplastic.com/posts/](https://truongthinhplastic.com/posts/) — HSTS, CSP, X-Content-Type-Options
- [https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/](https://truongthinhplastic.com/san-pham/khoi-lap-phuong-tri-tue-ky-nang-song/) — HSTS, CSP, X-Content-Type-Options
- [https://truongthinhplastic.com/shop/](https://truongthinhplastic.com/shop/) — HSTS, CSP, X-Content-Type-Options
- [https://truongthinhplastic.com/ve-chung-toi/](https://truongthinhplastic.com/ve-chung-toi/) — HSTS, CSP, X-Content-Type-Options

#### URL is very long

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

- [https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/](https://truongthinhplastic.com/hoat-dong-da-ngoai-cua-cong-ty-truong-thinh-plastic-gan-ket-doi-ngu-chia-se-niem-vui/) — 116 chars

## Checks & coverage

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

- ✗ Agent Readiness — 10 warning(s), 9 notice(s)
- ✓ AI Content — clean
- ✓ Amp — clean
- ✓ Budget — clean
- ✓ Cache — clean
- ✓ Canonical — clean
- ✗ Content — 1 notice(s)
- ✗ Crawlability — 1 warning(s), 1 notice(s)
- ✓ Duplicate — clean
- ✓ Geo — clean
- ✗ Headings — 9 warning(s)
- ✓ Hreflang — clean
- ✗ Images — 1 notice(s)
- ✓ Indexability — clean
- ✗ Links — 10 warning(s), 10 notice(s)
- ✗ Meta Description — 2 warning(s), 5 notice(s)
- ✓ Mobile — clean
- ✗ Performance — 10 warning(s), 48 notice(s)
- ✓ Rendering — clean
- ✓ Robots — clean
- ✗ Security — 10 notice(s)
- ✓ Sitemap — clean
- ✗ Social — 6 notice(s)
- ✗ Structured Data — 1 warning(s), 10 notice(s)
- ✗ Titles — 2 warning(s)
- ✗ URL — 1 notice(s)
- ✓ Video — clean

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