Skip to content
SEO Optimizer is live, Audit on page SEO and AI-search readiness. Try it free
Sign in
Broken Link Checker

Find dead links before your users do

A real browser loads your page and checks every link it finds - up to 25 per scan, in batches, with the exact mechanics disclosed below so you know what you're getting.

Check my links free

How the check actually works

No vague "we crawl your site" - here's exactly what happens.

Up to 25 links per scan

Every unique link found on the page is collected, then the first 25 are checked - enough to catch the links that matter on most pages without an unbounded crawl.

Checked in batches of 6

Links are checked concurrently in groups of 6, each with its own timeout, so one slow or hanging link doesn't stall the whole scan.

HEAD requests, not full loads

Each link is checked with a lightweight HEAD request - fast enough to check dozens of links without loading every linked page in full.

How it works

Real browser, real links, disclosed limits.

Paste your URL

A real browser loads the page - links added by JavaScript are caught, not just links in the raw HTML.

Every link is collected and checked

Up to 25 unique links, checked in batches of 6 with individual timeouts.

See exactly what broke

Each dead link is listed with its status - a 404, a timeout, or a connection failure - so you know what to fix, not just that something's wrong.

FAQ

Frequently asked questions

This tool checks the links on a single page you give it, not an entire site's link graph - 25 covers the links on that page with room to spare for most content. If you need whole-site crawl coverage, a dedicated site crawler is the right tool; see how Scanverra compares to Screaming Frog and Sitebulb on the comparison pages.

Yes - the scan loads the page in a real browser, not a static HTML parser, so links rendered client-side are collected the same way a visitor's browser would see them.

Anything that doesn't return a successful response within the timeout - 404s, other 4xx/5xx errors, DNS failures, and connection timeouts are all flagged as broken.

Yes - both internal links (to other pages on your own site) and external links (to other domains) are checked in the same pass.

Related audits

Website Audit

Run a free instant audit for performance, SEO, accessibility, and best practices.

SEO Audit

Check crawlability, metadata, structured data, and AI-agent discoverability.

Performance Audit

A full lab performance audit across desktop and mobile, with framework-aware fixes.

Accessibility Audit

See exactly which WCAG 2.1/2.2 success criteria your site fails, and why.

Security Audit

Turn a header/vulnerability scan into SOC 2 and GDPR control evidence.

Website Speed Audit

How fast your site loads, in plain language - one number, no jargon.

Core Web Vitals Audit

Check LCP, CLS, and INP against Google's thresholds, lab and field.

Security Headers Checker

CSP, HSTS, and every other HTTP security header - analyzed, not just listed.

Open Graph Checker

See whether your page has the og:title, og:description, and og:image tags social platforms need.

Schema Markup Checker

Check whether your page ships JSON-LD structured data search engines and AI agents can read.

Sitemap Checker

Check whether your sitemap.xml is reachable, valid, and free of common mistakes.

Redirect Checker

Trace a URL's redirect chain and catch loops, excess hops, and HTTPS-to-HTTP downgrades.

SSL Checker

Test your SSL certificate for expiry, hostname match, chain trust, TLS version, key strength and HSTS in seconds.

Color Contrast Checker

Calculate the WCAG contrast ratio of any two colors and see AA and AAA results, with a suggested accessible color.

Website Technology Checker

Find out which CMS, framework, ecommerce platform and libraries a website is built with.

robots.txt Checker

Check syntax, sitemap lines and size limits, and test whether Googlebot or any crawler can access a URL.

Canonical Checker

Find missing, duplicate, relative or conflicting canonical tags and check that the canonical URL loads.

Hreflang Checker

Validate language codes, x-default and self-references, and confirm every alternate page links back.

Meta Tag Checker

Check title tags, meta descriptions, H1 headings, robots, viewport and Open Graph tags on any page.

HTTP Status Checker

Check up to 20 URLs at once for 200, 301, 404 and 500 responses and redirect chains.

CSP Evaluator

Check a Content-Security-Policy for unsafe-inline, unsafe-eval, wildcards, missing object-src and base-uri, from a URL or pasted policy.

Mixed Content Checker

Find http:// scripts, stylesheets, iframes and images on HTTPS pages that browsers block or warn about.

Alt Text Checker

Find images with missing, empty, file-name or overly long alt text on any page, for accessibility and image SEO.

API Key Leak Checker

Scan a website's public HTML and JavaScript for exposed API keys, tokens and secrets.

MCP Security Scanner

Find unpinned MCP servers, leaked tokens and risky agent settings in your repo.

Vibe Coding Security

Check AI-written code for secrets, injection flaws and risky dependencies.

ADA Compliance Checker

Test your site against the WCAG criteria ADA cases reference.

EAA Compliance Checker

Check your site against the WCAG basis of the European Accessibility Act.

For Agencies

Audit client sites for SEO, speed, accessibility and security on one team plan.

Free - no sign-up required

Check your links for free

A real browser crawl, up to 25 links, checked in batches.

Run free audit