---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: skullduck.net
report_url: "https://crawlinx.com/audit/skullduck.net"
crawl_id: 20260720T141319-8bcd1191
health_score: 65
generated_at: 2026-08-26T01:55:59Z
total_pages: 7
html_pages: 7
indexable_pages: 7
errors: 0
warnings: 14
notices: 45
---

# SEO audit: skullduck.net

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

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

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 7 |
| HTML pages | 7 |
| Indexable | 7 |
| Non-indexable | 0 |
| Orphan pages | 0 |
| Broken internal links | 0 |
| Avg response time | 1454 ms |
| Errors / Warnings / Notices | 0 / 14 / 45 |
| Status codes | 7×200 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Content | 70 | 0 | 7 | 7 |
| Meta Description | 74 | 0 | 6 | 0 |
| Headings | 96 | 0 | 1 | 0 |
| Images | 100 | 0 | 0 | 7 |
| Links | 100 | 0 | 0 | 4 |
| Performance | 100 | 0 | 0 | 7 |
| Security | 100 | 0 | 0 | 7 |
| Social | 100 | 0 | 0 | 7 |
| Structured Data | 100 | 0 | 0 | 6 |

## Issues

### Warnings (14)

#### Thin content (low word count)

- Rule: `content.thin` · Category: Content · Occurrences: 7

- [https://www.skullduck.net/](https://www.skullduck.net/) — 115 words
- [https://www.skullduck.net/blank](https://www.skullduck.net/blank) — 64 words
- [https://www.skullduck.net/blank-1](https://www.skullduck.net/blank-1) — 39 words
- [https://www.skullduck.net/blank-2](https://www.skullduck.net/blank-2) — 72 words
- [https://www.skullduck.net/blank-3](https://www.skullduck.net/blank-3) — 63 words
- [https://www.skullduck.net/blank-4](https://www.skullduck.net/blank-4) — 36 words
- [https://www.skullduck.net/uber-uns](https://www.skullduck.net/uber-uns) — 110 words

#### Missing <h1>

- Rule: `h1.missing` · Category: Headings · Occurrences: 1

- [https://www.skullduck.net/uber-uns](https://www.skullduck.net/uber-uns)

#### Missing meta description

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

- [https://www.skullduck.net/blank](https://www.skullduck.net/blank)
- [https://www.skullduck.net/blank-1](https://www.skullduck.net/blank-1)
- [https://www.skullduck.net/blank-2](https://www.skullduck.net/blank-2)
- [https://www.skullduck.net/blank-3](https://www.skullduck.net/blank-3)
- [https://www.skullduck.net/blank-4](https://www.skullduck.net/blank-4)
- [https://www.skullduck.net/uber-uns](https://www.skullduck.net/uber-uns)

### Notices (45)

#### Low text-to-HTML ratio

- Rule: `content.low_ratio` · Category: Content · Occurrences: 7

- [https://www.skullduck.net/](https://www.skullduck.net/) — 0.1%
- [https://www.skullduck.net/blank](https://www.skullduck.net/blank) — 0.0%
- [https://www.skullduck.net/blank-1](https://www.skullduck.net/blank-1) — 0.0%
- [https://www.skullduck.net/blank-2](https://www.skullduck.net/blank-2) — 0.1%
- [https://www.skullduck.net/blank-3](https://www.skullduck.net/blank-3) — 0.1%
- [https://www.skullduck.net/blank-4](https://www.skullduck.net/blank-4) — 0.0%
- [https://www.skullduck.net/uber-uns](https://www.skullduck.net/uber-uns) — 0.1%

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

- Rule: `images.missing_dimensions` · Category: Images · Occurrences: 7

- [https://www.skullduck.net/](https://www.skullduck.net/) — 4 of 4 images without width/height
- [https://www.skullduck.net/blank](https://www.skullduck.net/blank) — 6 of 6 images without width/height
- [https://www.skullduck.net/blank-1](https://www.skullduck.net/blank-1) — 3 of 3 images without width/height
- [https://www.skullduck.net/blank-2](https://www.skullduck.net/blank-2) — 10 of 10 images without width/height
- [https://www.skullduck.net/blank-3](https://www.skullduck.net/blank-3) — 5 of 5 images without width/height
- [https://www.skullduck.net/blank-4](https://www.skullduck.net/blank-4) — 5 of 5 images without width/height
- [https://www.skullduck.net/uber-uns](https://www.skullduck.net/uber-uns) — 4 of 4 images without width/height

#### Page has only one internal inlink (fragile crawl path)

- Rule: `links.single_inlink` · Category: Links · Occurrences: 4

- [https://www.skullduck.net/blank-1](https://www.skullduck.net/blank-1) — only one internal link points here — if that source changes, this page becomes an orphan. Add more contextual internal links to strengthen the crawl path.
- [https://www.skullduck.net/blank-2](https://www.skullduck.net/blank-2) — only one internal link points here — if that source changes, this page becomes an orphan. Add more contextual internal links to strengthen the crawl path.
- [https://www.skullduck.net/blank-3](https://www.skullduck.net/blank-3) — only one internal link points here — if that source changes, this page becomes an orphan. Add more contextual internal links to strengthen the crawl path.
- [https://www.skullduck.net/blank-4](https://www.skullduck.net/blank-4) — only one internal link points here — if that source changes, this page becomes an orphan. Add more contextual internal links to strengthen the crawl path.

#### Missing Open Graph tags

- Rule: `og.missing` · Category: Social · Occurrences: 7

- [https://www.skullduck.net/](https://www.skullduck.net/) — og:image
- [https://www.skullduck.net/blank](https://www.skullduck.net/blank) — og:description, og:image
- [https://www.skullduck.net/blank-1](https://www.skullduck.net/blank-1) — og:description, og:image
- [https://www.skullduck.net/blank-2](https://www.skullduck.net/blank-2) — og:description, og:image
- [https://www.skullduck.net/blank-3](https://www.skullduck.net/blank-3) — og:description, og:image
- [https://www.skullduck.net/blank-4](https://www.skullduck.net/blank-4) — og:description, og:image
- [https://www.skullduck.net/uber-uns](https://www.skullduck.net/uber-uns) — og:description, og:image

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

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

- [https://www.skullduck.net/](https://www.skullduck.net/) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.skullduck.net/blank](https://www.skullduck.net/blank) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.skullduck.net/blank-1](https://www.skullduck.net/blank-1) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.skullduck.net/blank-2](https://www.skullduck.net/blank-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://www.skullduck.net/blank-3](https://www.skullduck.net/blank-3) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.skullduck.net/blank-4](https://www.skullduck.net/blank-4) — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- [https://www.skullduck.net/uber-uns](https://www.skullduck.net/uber-uns) — 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://www.skullduck.net/blank](https://www.skullduck.net/blank)
- [https://www.skullduck.net/blank-1](https://www.skullduck.net/blank-1)
- [https://www.skullduck.net/blank-2](https://www.skullduck.net/blank-2)
- [https://www.skullduck.net/blank-3](https://www.skullduck.net/blank-3)
- [https://www.skullduck.net/blank-4](https://www.skullduck.net/blank-4)
- [https://www.skullduck.net/uber-uns](https://www.skullduck.net/uber-uns)

#### Missing recommended security headers

- Rule: `security.missing_headers` · Category: Security · Occurrences: 7

- [https://www.skullduck.net/](https://www.skullduck.net/) — CSP
- [https://www.skullduck.net/blank](https://www.skullduck.net/blank) — CSP
- [https://www.skullduck.net/blank-1](https://www.skullduck.net/blank-1) — CSP
- [https://www.skullduck.net/blank-2](https://www.skullduck.net/blank-2) — CSP
- [https://www.skullduck.net/blank-3](https://www.skullduck.net/blank-3) — CSP
- [https://www.skullduck.net/blank-4](https://www.skullduck.net/blank-4) — CSP
- [https://www.skullduck.net/uber-uns](https://www.skullduck.net/uber-uns) — CSP

## Checks & coverage

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

- ✓ Agent Readiness — clean
- ✓ AI Content — clean
- ✓ Amp — clean
- ✓ Budget — clean
- ✓ Cache — clean
- ✓ Canonical — clean
- ✗ Content — 7 warning(s), 7 notice(s)
- ✓ Crawlability — clean
- ✓ Duplicate — clean
- ✓ Geo — clean
- ✗ Headings — 1 warning(s)
- ✓ Hreflang — clean
- ✗ Images — 7 notice(s)
- ✓ Indexability — clean
- ✗ Links — 4 notice(s)
- ✗ Meta Description — 6 warning(s)
- ✓ Mobile — clean
- ✗ Performance — 7 notice(s)
- ✓ Rendering — clean
- ✓ Robots — clean
- ✗ Security — 7 notice(s)
- ✓ Sitemap — clean
- ✗ Social — 7 notice(s)
- ✗ Structured Data — 6 notice(s)
- ✓ Titles — clean
- ✓ URL — clean
- ✓ Video — clean

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

## 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