SEO Site Auditor — Full On-Page Audit with Scores & Broken Link Checker

Crawl any website and get a complete on-page SEO audit of every page: a 0–100 SEO score, a prioritized issue list (errors / warnings / notices), broken link detection, meta tag analysis, heading structure, structured data, Open Graph, mobile-readiness and basic performance signals — in clean JSON/CSV you can hand to a client or pipe into a dashboard.

Built for agencies, freelancers, in-house SEO teams and site owners who want repeatable, schedulable technical audits without a $100+/mo SaaS subscription.

What it checks on every page

Category	Checks
Indexing	HTTP status, noindex flags, canonical URL, redirect chains
Meta tags	Title presence & length, meta description presence & length, charset, viewport (mobile)
Content	H1/H2 structure, word count, thin content detection, text-to-HTML ratio, lang attribute
Links	Internal/external counts, broken links (404/410/5xx/dead hosts) — each unique link checked once per run
Media	Images missing alt text
Social	Open Graph (og:title/description/image), Twitter card
Structured data	JSON-LD blocks and their schema.org types
Security	HTTPS usage, mixed content on secure pages
Performance	Server response time, HTML document size

Every issue comes with severity and a human-readable message; every page gets a score, and results are sorted worst pages first so you know where to start.

Input example

{
    "startUrls": ["https://your-website.com"],
    "crawlWebsite": true,
    "maxPages": 100,
    "checkBrokenLinks": true
}

Output example (one page)

{
    "url": "https://your-website.com/pricing",
    "score": 76,
    "statusCode": 200,
    "title": "Pricing",
    "titleLength": 7,
    "metaDescription": null,
    "h1Count": 1,
    "brokenLinkCount": 2,
    "brokenLinks": [{ "url": "https://your-website.com/old-page", "status": 404 }],
    "imagesWithoutAlt": 3,
    "wordCount": 420,
    "jsonLdTypes": ["Organization"],
    "issues": [
        { "severity": "error", "code": "missing-meta-description", "message": "Page has no meta description." },
        { "severity": "error", "code": "broken-links", "message": "2 broken links found on this page." },
        { "severity": "warning", "code": "short-title", "message": "Title is only 7 characters (recommended 30–60)." }
    ]
}

Use cases

• Client audits & reports — run once, export CSV, deliver a prioritized fix list.
• Continuous monitoring — schedule weekly; diff scores over time and alert on regressions via Apify integrations (Slack, email, webhooks).
• Pre-launch QA — catch noindex flags, broken links and missing metas before a site goes live.
• Migration verification — crawl after a redesign/replatform and compare against the old baseline.

Scheduling & integrations

Run on a schedule, export JSON, CSV, Excel, or connect Google Sheets, Zapier, Make, Slack, webhooks and the Apify API. MCP-compatible for AI agents.

FAQ

Does it render JavaScript? No — it audits server-rendered HTML, which is also what search engine crawlers parse first. This keeps audits fast and affordable. JS-only content will show as thin content, which is itself a useful SEO signal.

How is the score calculated? Errors cost 12 points, warnings 6, notices 2, from a base of 100. The formula is consistent across runs, so scores are comparable over time.

Will it crawl the whole site? It follows internal links from your start URLs up to maxPages. Subdomains are treated as separate sites (not followed).