SEO Audit Tool: On-Page Checks, Crawl & Broken Links

Check a list of pages, or crawl whole websites, for the on-page SEO problems that cost rankings and clicks: missing or overlong titles and meta descriptions, missing H1s, noindex tags, canonicals that point elsewhere, broken hreflang, missing Open Graph and structured data, images without alt text, mixed content, redirect chains, error pages and broken internal links.

You get one row per URL with every fact read from the page, a list of issues (each with a code, a severity and a plain-English message) and a score from 0 to 100. The run summary adds the most common issues and, for crawls, the duplicate titles and meta descriptions across each site.

You pay only for HTML pages that answered HTTP 200 and were audited: $3 per 1,000 pages. Redirects, 404s and other error pages, PDFs and images, pages robots.txt keeps the tool away from, and unreachable or invalid addresses still get a row, free.

Who it's for

• SEO consultants and agencies running quick technical audits for clients or prospects.
• Site owners and marketers checking a launch, a migration or a batch of new landing pages.
• Developers adding SEO checks to CI or monitoring: call it from the API, filter rows on issues.code, alert on score.

What it checks

Area	What's in the row	Issues it can raise
Title	title, titleLength	missing, longer than 60 or shorter than 30 characters, more than one <title>
Meta description	metaDescription, metaDescriptionLength	missing, over 160 or under 70 characters, more than one
Headings	h1 (list), h2Count	no H1, several H1s, empty H1
Indexing	indexable + indexabilityReason, metaRobots, xRobotsTag, canonical, canonicalPointsElsewhere	noindex in meta robots or in the X-Robots-Tag header, robots.txt blocks Googlebot, canonical missing, invalid, duplicated or pointing to another URL, nofollow
International	lang, hreflang (list of language and URL)	no lang attribute, invalid hreflang codes, hreflang set that leaves out the page itself
Sharing and schema	openGraph, twitterCard (tags present), jsonLdTypes	no Open Graph or missing og:title/description/image, no twitter:card, no JSON-LD, JSON-LD that isn't valid JSON
Content and media	wordCount, imagesTotal, imagesWithoutAlt	under 200 words, images with no alt attribute
Links	internalLinks, externalLinks, nofollowLinks, and with link checks on linksChecked, brokenLinks	broken internal links
Delivery	statusCode, redirectChain, responseTimeMs, contentType, bytes, hasViewport, mixedContentCount	plain http, redirect or redirect chain, slow response (over 2 s), page over 5 MB, no viewport tag, http resources on an https page, meta refresh
Site-wide (crawl)	in the run summary	duplicate titles and duplicate meta descriptions across a site's indexable pages

Score: 100, minus 15 for each error, 5 for each warning and 1 for each notice, never below 0. A page with no issues scores 100. Errors are things that break pages for users or search engines (missing title, mixed content, broken links); warnings usually cost rankings or clicks; notices are worth a look.

How it compares

	This tool	Other SEO audit tools in the Store
Price per 1,000 pages	$3	from about $2 to about $40 (the most used one charges about $40)
What you're charged for	only HTML pages audited; redirects, error pages, files and blocked pages are free	check each tool's pricing
Pages or crawl	both: an exact list of URLs, or a breadth-first crawl of each site	varies
How pages are read	plain HTTP, like a search engine's first pass: fast and cheap, but JavaScript isn't run	some run a real browser

If your pages build their titles, meta tags or content with JavaScript in the browser, this tool sees the HTML the server sends, not the rendered page. Server-rendered and static sites (most CMS, e-commerce and documentation sites) are read completely.

Input

Field	What it does
Pages or websites (startUrls)	One per line: https://www.example.com/pricing or a bare domain like example.com (https is used). Request-list style objects ({"url": "..."}) work too. Repeats are audited once.
What to audit (mode)	pages (default): exactly the listed URLs, following any redirects. crawl: start at each URL and follow links on the same site, breadth first.
Max pages per site (maxPagesPerSite)	Crawl mode: how many URLs of each site are checked (default 50, max 5,000). Every row counts (redirects and error pages too), but only audited pages are charged.
Also use the sitemap (includeSitemap)	Crawl mode: add the pages listed in the site's sitemap (from robots.txt Sitemap lines, or /sitemap.xml, gzipped or not, sitemap indexes included).
Check internal links (checkLinks)	HEAD-check every internal link on each audited page (up to 100 per page, each link once per run) and list broken ones. No extra charge; runs take longer.
Pages at once (maxConcurrency)	Pages fetched in parallel across all sites (default 10).
Requests per second per site (maxRequestsPerSecondPerHost)	Default 2. www and the bare domain share one limit.

Crawl a site:

{
  "startUrls": ["https://www.example.com/"],
  "mode": "crawl",
  "maxPagesPerSite": 500,
  "includeSitemap": true,
  "checkLinks": true
}

Audit a list of landing pages:

{
  "startUrls": ["https://www.example.com/pricing", "https://www.example.com/features", "example.org"],
  "mode": "pages"
}

Output

One row per URL (shortened):

{
  "url": "https://shop.example/products",
  "finalUrl": "https://shop.example/products",
  "status": "audited",
  "statusCode": 200,
  "score": 60,
  "indexable": false,
  "indexabilityReason": "noindex in meta robots",
  "title": "All Products – Mugs, Bowls, Plates, Vases and Kitchen Accessories from Shop Example",
  "titleLength": 83,
  "metaDescription": null,
  "h1": ["Products", "Shop all"],
  "canonical": "https://shop.example/products",
  "canonicalPointsElsewhere": false,
  "metaRobots": "noindex, follow",
  "lang": "en",
  "openGraph": [],
  "jsonLdTypes": [],
  "wordCount": 71,
  "imagesTotal": 2,
  "imagesWithoutAlt": 0,
  "internalLinks": 2,
  "mixedContentCount": 3,
  "hasViewport": false,
  "issues": [
    {"code": "title_too_long", "severity": "warning", "message": "The title is 83 characters; search results usually show about 60."},
    {"code": "noindex", "severity": "warning", "message": "Meta robots says noindex: search engines will leave this page out."},
    {"code": "mixed_content", "severity": "error", "message": "3 resource(s) load over http:// on this https page, e.g. http://cdn.shop.example/mug-small.jpg"}
  ],
  "errors": 1, "warnings": 4, "notices": 5,
  "redirectChain": [],
  "responseTimeMs": 212,
  "site": "shop.example",
  "crawlDepth": 1,
  "linkedFrom": "https://shop.example/"
}

status is one of:

• audited: an HTML page that answered HTTP 200 and was audited. The only charged status.
• redirect: crawl mode only, a redirect that wasn't followed because it leaves the site or lands on a page already in the audit (finalUrl says where it goes).
• http_error: the URL answered 4xx or 5xx (statusCode).
• not_html: a PDF, image or other file.
• blocked_by_robots: robots.txt asks tools like this one not to read it, so it wasn't.
• failed: no answer (timeout, connection refused, DNS failure).
• invalid_url: not a usable public web address, or a redirect to a local or private network address.

The SUMMARY record in the run's key-value store has counts per status, pages charged, the average score, how often each issue appeared, and per site the duplicate title and meta description groups (with their URLs), whether the page limit was reached and how many sitemap pages were found. Download rows as JSON, CSV or Excel, or send them to Google Sheets, Zapier, Make or n8n.

Pricing

Pay per event: $0.003 per page audited ($3 per 1,000). No start fee. Link checks, robots.txt and sitemap requests, redirects and every non-audited row are free. Set a maximum charge per run in the run options: the tool never starts a page it couldn't pay for and stops cleanly when the cap is reached (the summary says so).

Good to know

• No JavaScript. Pages are read over plain HTTP. Content that only appears after scripts run in a browser isn't seen.
• Polite by default. It obeys robots.txt for its own user agent (SEOAuditBot), honors Crawl-delay up to 10 seconds, starts at most 2 requests per second per site, retries 429 and 5xx answers with backoff, and names itself in its User-Agent. It also checks robots.txt for Googlebot, so a page this tool may read but Google may not is marked not indexable.
• Stays on the site. A crawl follows links on the same host, with www. and the bare domain counted as one site. Other subdomains (blog.example.com) and other domains are counted as external links but not crawled. If the start page redirects to a new domain, the crawl continues there.
• What a crawl skips. Links marked rel="nofollow", links on pages with meta robots nofollow, and links to files (PDF, images, archives, CSS, JS) aren't queued. URLs with different query strings are different pages.
• Duplicates. Only indexable pages are compared (a page canonicalised elsewhere naturally shares its title). Rows are saved as pages are audited, so the second and later pages of a duplicate group get the duplicate_title or duplicate_meta_description issue naming the first; the summary lists every group in full.
• Link checks treat 4xx (except 401, 403 and 429, which usually mean the site blocks tools rather than a missing page), 5xx and no answer as broken. Links robots.txt disallows aren't checked.
• Limits. Pages are read up to 5 MB (larger ones are audited on their first 5 MB and flagged). Up to 10 sitemap files are read per site. Local, private and internal network addresses are never fetched, also when a redirect or a domain points to one.

This tool isn't affiliated with or endorsed by Google, X, or any website it reads.

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