What is WebsiteLinter?

WebsiteLinter is a free online tool that audits any website for SEO issues, page speed, security headers, and accessibility compliance — all in one 30-second scan.

Is the WebsiteLinter health check really free?

Yes. You get 3 free health checks per day with no signup and no credit card required. Upgrade to Pro ($9/mo) for unlimited scans, history, and PDF export.

What does the health check measure?

Core Web Vitals (LCP, INP, CLS), Lighthouse performance score, on-page SEO signals (title, meta description, headings, canonical, robots), TLS and security headers (HSTS, CSP, X-Frame-Options), and WCAG 2.1 accessibility findings.

How often should I run a website health check?

For most small-to-medium business sites, monthly is the right cadence. Run a check after every deploy, theme change, or plugin update — those are the moments performance and security regressions creep in.

Will the scan slow down or break my website?

No. The check loads your public pages once, the same way Google's crawler does. It does not log in, post forms, or hit private endpoints — and it respects rate limits.

Free Website SEO Checker & Audit Tool

Run a free website SEO checker in 30 seconds. Audit SEO, Core Web Vitals, security, and accessibility with prioritized fixes — no signup, no credit card required.

✓ No signup required ✓ 3 free scans per day ✓ Results in 30 seconds ✓ Works on any website

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Trusted by 10,000+ small business owners, developers, and SEO professionals

What WebsiteLinter Audits

A full-spectrum health check covering every signal that affects your rankings, conversions, and compliance — all in a single 30-second scan.

SEO Audit

Title tags, meta descriptions, heading structure (H1–H3), canonical tags, schema markup (structured data), internal link integrity, XML sitemap validation, robots directives, and indexability signals.

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Performance Audit

Lighthouse score, Core Web Vitals (LCP, INP, CLS), Time to First Byte (TTFB), render-blocking resources, image optimization opportunities, and JavaScript bundle size analysis.

Free speed test →

Security Scan

TLS certificate validity and expiry, HSTS enforcement, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, and mixed content detection.

Free security scan →

Accessibility Check

WCAG 2.1 AA findings: color contrast ratios, missing image alt text, ARIA role misuse, keyboard navigation traps, skip-link presence, form label association, and heading hierarchy.

Free accessibility check →

Pricing Plans

Start free. Upgrade when you need unlimited SEO checks, scan history, PDF exports, competitor comparison, or agency reporting.

Free

3 health checks per day
SEO + performance + security + accessibility
No signup or credit card

Pro Popular

$0 / 7 days

Unlimited scans
Full scan history
PDF export
Competitor comparison
Then $9/month

Agency

$29/mo

Multi-site management
White-label reports
Client-ready exports
Scheduled recurring audits

See full pricing comparison →

Free audits by industry

Industry-specific checks for schema markup, local SEO signals, and compliance issues that generic tools miss.

Dental Practice Audit Law Firm Audit Restaurant Audit HVAC Audit Real Estate Audit

Ready to find what's hurting your site?

Free · 30 seconds · No signup · No credit card · Works on any website

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WebsiteLinter is built by Lindsey Web Solutions — a web agency serving small businesses nationwide.