Broken Link List Checker

Paste up to 500 URLs to find duplicates, formatting errors, and invalid links. Instant results — runs entirely in your browser.

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Daily uses: 0 / 10 free   Upgrade for unlimited →
Paste up to 500 URLs, one per line
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How to use this tool

  • Paste your list of URLs into the box above — one URL per line.
  • Click Check Links to run the analysis.
  • The tool checks for duplicate URLs, invalid formats, and malformed links.
  • Use Copy Clean URLs to get a deduplicated, valid-only list.
  • Use Download .txt to save the full report.

About this tool

This tool checks your URL list for common issues that cause SEO problems — duplicate pages, malformed URLs, and missing protocols. Clean URL lists are essential before building sitemaps, running redirects, or auditing internal links.

Note: Live HTTP status checks (200, 301, 404) require a server-side tool due to browser security restrictions. For live checking, use Google Search Console or Screaming Frog.

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