Broken Link Tester & 404 Detector
Paste a list of links or HTML code to scan for 404 errors, network failures, and dead URLs.
How to Use Broken Link Tester
Input URL or Markup
Enter the target webpage URL, domain name, or paste the raw markup into the input field.
Run Technical Audit
Click the action button to parse tags, simulate crawler directives, or query live DNS records.
Review Actionable Insights
Inspect diagnostic status badges, recommendations, and copy formatted audit results.
Frequently Asked Questions
How do broken links affect SEO?
Broken links (404 errors) degrade user experience, increase bounce rates, and prevent search spiders from discovering new content on your domain.
100% In-Browser & Free
All technical SEO audits, crawler checks, and syntax parsing execute privately inside your browser without storing your confidential URLs or site data.
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