SEO Audit Tool

What is SEO Audit Tool？

Comprehensive on-page SEO analysis with 40+ checks. Supports multi-page crawling with depth control.

SEO Audit Tool Features

Page Basics: URL, Title (length / presence), Meta Description (length / presence), Doctype, charset declaration

Semantic Structure: H1 (presence / uniqueness / content), H2 presence

Link Analysis: Total link count, internal links, external links, broken links (internal & external), internal nofollow links

Media Checks: Image alt attribute detection, broken image detection

Structured Data: JSON-LD extraction, Microdata extraction

Technical SEO: Viewport meta, AMP version, iframe detection, robots.txt accessibility, favicon accessibility, robots blocking tag, Flash detection

Analytics: Google Analytics (global object + tracking function) detection

Content Quality: Word count, content length assessment

How It Works

1. Connects to CoreClaw's remote fingerprint browser via WebSocket
2. Navigates to each page with configurable timeout and retry logic
3. Injects jQuery locally (no external CDN dependency)
4. Performs 40+ SEO checks in the browser context via page.evaluate
5. Checks same-origin links with real HTTP status codes; cross-origin links use no-cors mode (opaque, skipped from broken detection)
6. Extracts internal links for same-domain crawling with depth control
7. Pushes results to CoreClaw's structured Result store

Output Field Conventions

Important: A false boolean, empty string (""), or empty array ([]) means the page genuinely lacks that element. It is NOT a collection failure or data omission.

Input Parameters

SEOParams Defaults

{
  "maxTitleLength": 70,
  "minTitleLength": 10,
  "maxMetaDescriptionLength": 140,
  "maxLinksCount": 3000,
  "maxWordsCount": 350,
  "outputLinks": false,
  "workingStatusCodes": [200, 301, 302, 304]
}

Output Fields

Each page produces a JSON object with these fields:

Usage Examples

Example 1: Audit a single site, crawl up to 10 pages

{
  "startUrl": [
    { "url": "https://coreclaw.com" }
  ],
  "maxRequestsPerCrawl": 10,
  "maxRequestRetries": 2
}

Example 2: Compare SEO across multiple domains (homepage only)

{
  "startUrl": [
    { "url": "https://coreclaw.com" },
    { "url": "https://docs.coreclaw.com" },
    { "url": "https://console.coreclaw.com" }
  ],
  "maxRequestsPerCrawl": 1,
  "seoParams": {
    "maxTitleLength": 60,
    "outputLinks": true
  }
}

FAQ

Does the tool support crawling Single Page Applications (SPA)?

Yes. You can increase the pageTimeout value (e.g., to 120000 milliseconds) to ensure the page is fully rendered before analysis.

What do empty outputs / empty arrays mean?

false / "" / [] means the page truly lacks that element, not a crawling failure. It can be directly used as a basis for optimization.

How to only check the homepage without deep crawling?

Set maxRequestsPerCrawl to 1, and the tool will only analyze the input starting URL.

What is isContentEnoughLong based on in the results?

It is determined by seoParams.maxWordsCount. The value is true if the page text word count is greater than or equal to this value, otherwise false.

Does it support exporting to CSV/Excel?

The tool outputs standard structured JSON, which can be directly converted to CSV, Excel, or reports with one click using scripts or platforms.