What does Site Sheriff check?

Site Sheriff runs 160+ checks across 10 categories: SEO, security, accessibility, performance, broken links, content quality, images, resources, robots/sitemap, and internal linking.

How long does a scan take?

Most scans complete in under 90 seconds for sites up to 50 pages. Larger sites or full-page screenshots may take longer.

Is Site Sheriff free?

Yes, Site Sheriff is completely free to use. No signup required - just drop your URL and get your report.

What does Site Sheriff check?

Site Sheriff checks SEO (meta tags, headings, structured data), Security (HTTP headers, CSP, HSTS), Accessibility (WCAG 2.1 AA compliance), Performance (Core Web Vitals), Links (broken links, redirects), Content (readability, thin content), Images (alt text, formats), Resources (render-blocking), Robots & Sitemap, and AI Readiness.

Why was Site Sheriff built?

We believe every website deserves a thorough health check, regardless of budget. Existing tools are either expensive or limited. Site Sheriff provides agency-grade audits completely free, with no signup required.

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About Site Sheriff

What is Site Sheriff?

Site Sheriff is a free, comprehensive website auditing tool designed for freelancers, agencies, and developers who need quick, actionable insights about their websites. Just drop a URL and get an instant QA report with 160+ checks across 10 categories.

What We Check

Our audits cover everything that matters for a modern website:

SEO — Meta tags, headings, structured data, Open Graph, canonical URLs, sitemap validation
Security — HTTP headers, CSP, HSTS, mixed content, cookie security, HTTPS redirects
Accessibility — WCAG 2.1/2.2 AA compliance via axe-core, color contrast, ARIA attributes
Performance — Core Web Vitals (LCP, CLS, FCP), TTFB, resource optimization
Links — Broken links, redirect chains, internal link analysis
Content — Readability scores, thin content detection, heading hierarchy
Images — Alt text, modern formats (WebP/AVIF), lazy loading, sizing
Resources — Render-blocking resources, compression, preload hints
Robots & Sitemap — robots.txt validation, sitemap cross-referencing
AI Readiness — SearchGPT, Perplexity, and Claude compatibility checks

Why We Built This

We believe every website deserves a thorough health check, regardless of budget. Existing tools are either expensive (enterprise pricing) or limited (free tiers with caps). Site Sheriff provides agency-grade audits completely free, with no signup required.

Whether you're a solo developer launching a side project, a freelancer reviewing client sites, or an agency managing dozens of properties, Site Sheriff gives you the insights you need to ship with confidence.

Technology

Site Sheriff is built with modern web technologies: Next.js, React, TypeScript, Playwright for browser automation, and axe-core for accessibility testing. We use Supabase for data storage and deploy on Vercel for fast, reliable performance.

Open Source

Site Sheriff is open source and available on GitHub. Contributions, bug reports, and feature requests are welcome!