---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: teachinvietnam.com
report_url: "https://crawlinx.com/audit/teachinvietnam.com"
crawl_id: 20260723T083135-f85ff854
health_score: 55
generated_at: 2026-07-29T00:39:30Z
total_pages: 8
html_pages: 7
indexable_pages: 6
errors: 1
warnings: 23
notices: 43
---

# SEO audit: teachinvietnam.com

**Health score: 55/100** — needs attention

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

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 8 |
| HTML pages | 7 |
| Indexable | 6 |
| Non-indexable | 0 |
| Orphan pages | 0 |
| Broken internal links | 0 |
| Avg response time | 2874 ms |
| Errors / Warnings / Notices | 1 / 23 / 43 |
| Status codes | 1×0, 6×200, 1×500 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Security | 88 | 1 | 0 | 6 |
| Content | 78 | 0 | 6 | 6 |
| Meta Description | 78 | 0 | 6 | 0 |
| Performance | 78 | 0 | 6 | 12 |
| Titles | 89 | 0 | 3 | 0 |
| Crawlability | 93 | 0 | 2 | 0 |
| Agent Readiness | 100 | 0 | 0 | 1 |
| Social | 100 | 0 | 0 | 12 |
| Structured Data | 100 | 0 | 0 | 6 |

## Issues

### Errors (1)

#### Mixed content on HTTPS page

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

- [https://teachinvietnam.com/](https://teachinvietnam.com/) — 5 insecure subresource(s), e.g. http://teachinvietnam.com/wp-content/uploads/elementor/google-fonts/css/roboto.css?ver=1742294664

### Warnings (23)

#### Thin content (low word count)

- Rule: `content.thin` · Category: Content · Occurrences: 6

- [https://teachinvietnam.com/](https://teachinvietnam.com/) — 20 words
- [https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/](https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/) — 20 words
- [https://teachinvietnam.com/privacy-policy/](https://teachinvietnam.com/privacy-policy/) — 20 words
- [https://teachinvietnam.com/sample-page/](https://teachinvietnam.com/sample-page/) — 20 words
- [https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/](https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/) — 20 words
- [https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/](https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/) — 20 words

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

- Rule: `fetch.incomplete` · Category: Crawlability · Occurrences: 2

- [https://teachinvietnam.com/home-3/](https://teachinvietnam.com/home-3/) — HTTP 500, 14 words after 3 attempts
- [https://teachinvietnam.com/home-4/](https://teachinvietnam.com/home-4/) — h2: Get "https://teachinvietnam.com/home-4/": context deadline exceeded after 3 attempts

#### Missing meta description

- Rule: `meta_desc.missing` · Category: Meta Description · Occurrences: 6

- [https://teachinvietnam.com/](https://teachinvietnam.com/)
- [https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/](https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/)
- [https://teachinvietnam.com/privacy-policy/](https://teachinvietnam.com/privacy-policy/)
- [https://teachinvietnam.com/sample-page/](https://teachinvietnam.com/sample-page/)
- [https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/](https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/)
- [https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/](https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/)

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

- Rule: `perf.render_blocking` · Category: Performance · Occurrences: 6

- [https://teachinvietnam.com/](https://teachinvietnam.com/) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/](https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://teachinvietnam.com/privacy-policy/](https://teachinvietnam.com/privacy-policy/) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://teachinvietnam.com/sample-page/](https://teachinvietnam.com/sample-page/) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/](https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/) — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- [https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/](https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/) — 3 render-blocking <script> in <head> (add defer/async or use type=module)

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

- Rule: `title.too_long` · Category: Titles · Occurrences: 3

- [https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/](https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/) — 77 chars, ~616px (limit ~580px)
- [https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/](https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/) — 74 chars, ~594px (limit ~580px)
- [https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/](https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/) — 79 chars, ~611px (limit ~580px)

### Notices (43)

#### No llms.txt for AI agents

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

- [https://teachinvietnam.com/](https://teachinvietnam.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: 6

- [https://teachinvietnam.com/](https://teachinvietnam.com/) — 0.2%
- [https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/](https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/) — 0.2%
- [https://teachinvietnam.com/privacy-policy/](https://teachinvietnam.com/privacy-policy/) — 0.2%
- [https://teachinvietnam.com/sample-page/](https://teachinvietnam.com/sample-page/) — 0.2%
- [https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/](https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/) — 0.2%
- [https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/](https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/) — 0.2%

#### Missing Open Graph tags

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

- [https://teachinvietnam.com/](https://teachinvietnam.com/) — og:description, og:image
- [https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/](https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/) — og:description, og:image
- [https://teachinvietnam.com/privacy-policy/](https://teachinvietnam.com/privacy-policy/) — og:description, og:image
- [https://teachinvietnam.com/sample-page/](https://teachinvietnam.com/sample-page/) — og:description, og:image
- [https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/](https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/) — og:description, og:image
- [https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/](https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/) — og:description, og:image

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

- Rule: `perf.no_etag` · Category: Performance · Occurrences: 6

- [https://teachinvietnam.com/](https://teachinvietnam.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://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/](https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/) — 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://teachinvietnam.com/privacy-policy/](https://teachinvietnam.com/privacy-policy/) — 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://teachinvietnam.com/sample-page/](https://teachinvietnam.com/sample-page/) — 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://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/](https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/) — 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://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/](https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/) — 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: 6

- [https://teachinvietnam.com/](https://teachinvietnam.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://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/](https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/) — 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://teachinvietnam.com/privacy-policy/](https://teachinvietnam.com/privacy-policy/) — 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://teachinvietnam.com/sample-page/](https://teachinvietnam.com/sample-page/) — 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://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/](https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/) — 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://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/](https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/) — 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.

#### No structured data detected

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

- [https://teachinvietnam.com/](https://teachinvietnam.com/)
- [https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/](https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/)
- [https://teachinvietnam.com/privacy-policy/](https://teachinvietnam.com/privacy-policy/)
- [https://teachinvietnam.com/sample-page/](https://teachinvietnam.com/sample-page/)
- [https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/](https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/)
- [https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/](https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/)

#### Missing recommended security headers

- Rule: `security.missing_headers` · Category: Security · Occurrences: 6

- [https://teachinvietnam.com/](https://teachinvietnam.com/) — HSTS, CSP, X-Content-Type-Options
- [https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/](https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/) — HSTS, CSP, X-Content-Type-Options
- [https://teachinvietnam.com/privacy-policy/](https://teachinvietnam.com/privacy-policy/) — HSTS, CSP, X-Content-Type-Options
- [https://teachinvietnam.com/sample-page/](https://teachinvietnam.com/sample-page/) — HSTS, CSP, X-Content-Type-Options
- [https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/](https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/) — HSTS, CSP, X-Content-Type-Options
- [https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/](https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/) — X-Content-Type-Options, HSTS, CSP

#### Missing Twitter Card tag

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

- [https://teachinvietnam.com/](https://teachinvietnam.com/)
- [https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/](https://teachinvietnam.com/5-reasons-why-teaching-in-vietnam-will-transform-your-life/)
- [https://teachinvietnam.com/privacy-policy/](https://teachinvietnam.com/privacy-policy/)
- [https://teachinvietnam.com/sample-page/](https://teachinvietnam.com/sample-page/)
- [https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/](https://teachinvietnam.com/top-tips-for-landing-your-dream-teaching-job-in-vietnam/)
- [https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/](https://teachinvietnam.com/why-vietnam-is-the-ultimate-destination-for-teachers-in-2024/)

## Checks & coverage

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

- ✗ Agent Readiness — 1 notice(s)
- ✓ AI Content — clean
- ✓ Amp — clean
- ✓ Budget — clean
- ✓ Cache — clean
- ✓ Canonical — clean
- ✗ Content — 6 warning(s), 6 notice(s)
- ✗ Crawlability — 2 warning(s)
- ✓ Duplicate — clean
- ✓ Geo — clean
- ✓ Headings — clean
- ✓ Hreflang — clean
- ✓ Images — clean
- ✓ Indexability — clean
- ✓ Links — clean
- ✗ Meta Description — 6 warning(s)
- ✓ Mobile — clean
- ✗ Performance — 6 warning(s), 12 notice(s)
- ✓ Rendering — clean
- ✓ Robots — clean
- ✗ Security — 1 error(s), 6 notice(s)
- ✓ Sitemap — clean
- ✗ Social — 12 notice(s)
- ✗ Structured Data — 6 notice(s)
- ✗ Titles — 3 warning(s)
- ✓ URL — clean
- ✓ Video — clean

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