SEO Audit Tool - Website Crawler & Broken Link Checker

Crawl any website and get a technical SEO audit for every page: a 0-100 score and A-F grade, prioritized issues with fix recommendations, broken links, duplicate titles and meta descriptions, indexability, headings, images, structured data, social tags, security headers, and optional Core Web Vitals from Google PageSpeed Insights. $0.015 per audited page.

Real output from a default run of SEO Audit Tool in Apify Console.

What can this SEO audit crawler do?

• Crawl a whole site or a section - follow internal links from one or more start URLs with depth, include, and exclude patterns.
• Score every page 0-100 with an A-F grade, weighted by issue severity (critical, high, medium, low).
• Find on-page SEO issues - missing/short/long titles, missing or badly sized meta descriptions, missing canonical, noindex, missing H1, multiple H1s, skipped heading levels, thin content, missing lang, missing viewport.
• Find duplicate titles and meta descriptions across the crawled pages.
• Check broken links - optional HEAD/GET checks of internal and external links, with the broken URLs and status codes listed per page.
• Audit images - missing alt text, missing width/height, lazy-loaded image count.
• Validate structured data - JSON-LD blocks, schema types found, and JSON-LD that fails to parse.
• Social metadata - incomplete Open Graph tags and missing Twitter/X cards.
• Security headers - missing HSTS and Content-Security-Policy.
• Core Web Vitals (optional) - PageSpeed Insights performance, SEO, accessibility, and best-practice scores plus LCP, CLS, INP, TBT, and Speed Index for a limited number of pages.
• Site signals - robots.txt status and contents, and declared sitemap URLs.

What data does the SEO audit return?

One dataset row per page:

Field	Description
url, finalUrl, depth, statusCode, responseTimeMs, htmlBytes	Crawl data
score, grade	0-100 page score and A-F grade
issueCount, criticalIssues, highIssues, mediumIssues, lowIssues	Issue counts
issues[]	code, severity, category, message, recommendation, field
title, titleLength, metaDescription, metaDescriptionLength	Metadata
canonicalUrl, robotsMeta, indexable, htmlLang, viewport, hreflangCount	Indexability
h1Count, h1[], headings[]	Heading outline
wordCount, contentToHtmlRatio	Content depth
internalLinksCount, externalLinksCount, brokenLinksCount, brokenLinks[]	Links
imagesCount, imagesMissingAlt, imagesWithoutDimensions, lazyImagesCount	Images
structuredDataCount, structuredDataTypes[], invalidStructuredDataCount	Schema
openGraphComplete, twitterCardPresent	Social tags
pageSpeed	PageSpeed scores and Core Web Vitals (when enabled)

Key-value store: SUMMARY (average score and grade, indexable vs non-indexable pages, failed pages, issue counts by severity, top 25 issue codes), ISSUES (every issue as a flat list, easy to export to a spreadsheet), and SITE_SIGNALS (robots.txt and sitemap URLs).

How much does an SEO audit cost?

Pay-per-event: $0.015 per audited page ($15 per 1,000 pages) plus a tiny Actor-start fee. A 25-page audit costs about $0.38. maxPages caps both the crawl and the bill, and the Actor also respects your maximum charge per run. Broken-link checks and PageSpeed calls do not add result charges, but they make runs longer. Check the Pricing tab for current rates.

How to run a technical SEO audit

1. Enter one or more start URLs (homepage or a section such as /blog/).
2. Set maxPages and maxDepth. Use includePatterns / excludePatterns to focus the crawl.
3. Turn on checkBrokenLinks for a broken link check (set maxLinksToCheck).
4. Optionally turn on includePageSpeed for Core Web Vitals on a few pages.
5. Click Start. Sort by score, or export the ISSUES record as your fix list.

Input example

{
  "startUrls": ["https://example.com"],
  "maxPages": 100,
  "maxDepth": 3,
  "excludePatterns": ["*/login*", "*/cart*", "*/checkout*"],
  "checkBrokenLinks": true,
  "maxLinksToCheck": 300,
  "includePageSpeed": true,
  "pageSpeedStrategy": "mobile",
  "pageSpeedMaxPages": 3
}

Output example

{
  "url": "https://example.com/blog/post",
  "statusCode": 200,
  "score": 72,
  "grade": "C",
  "title": "Post",
  "titleLength": 4,
  "indexable": true,
  "h1Count": 2,
  "wordCount": 640,
  "brokenLinksCount": 1,
  "brokenLinks": [{ "url": "https://example.com/old-page", "statusCode": 404 }],
  "imagesMissingAlt": 3,
  "issues": [
    {
      "code": "short-title",
      "severity": "medium",
      "category": "metadata",
      "message": "Title is only 4 characters.",
      "recommendation": "Use a descriptive title that clearly communicates page intent.",
      "field": "title"
    }
  ]
}

Illustrative output shape.

Use cases

• Website SEO audits for clients or your own site, with a prioritized fix list.
• Broken link checking before and after site migrations.
• Scheduled SEO monitoring - run weekly and alert on new critical issues via webhooks.
• Content quality checks - thin pages, heading structure, missing alt text.
• Pre-launch QA - noindex left on, missing canonicals, invalid JSON-LD.

Integrations and API

Use the Apify API, schedules, webhooks, Make, Zapier, n8n, Google Sheets, or the Apify MCP server.

from apify_client import ApifyClient

client = ApifyClient("<YOUR_APIFY_TOKEN>")
run = client.actor("groupoject/technical-seo-audit-crawler").call(run_input={
    "startUrls": ["https://example.com"],
    "maxPages": 50,
    "checkBrokenLinks": True,
})
summary = client.key_value_store(run["defaultKeyValueStoreId"]).get_record("SUMMARY")["value"]
print(summary["averageScore"], summary["grade"], summary["topIssueCodes"][:5])

FAQ

Does it render JavaScript? No. It is a fast HTTP crawler that audits the HTML your server returns, which is what most search engine first passes see. Client-rendered content may show as thin.

Do I need a PageSpeed API key? No, but adding one in pageSpeedApiKey improves quota and reliability. The key is never written to the output.

How many pages can it audit? Up to 1,000 pages per run.

Will it overload my site? Lower maxConcurrency for small or fragile sites. The default user agent identifies the crawler.

Related Actors

• Website to Markdown Crawler - export page content as Markdown for LLMs.
• Google AI Overview Tracker - check whether your pages are cited in AI Overviews.
• Google Trends Scraper - find topics worth optimizing for.