broken-link-checker

Features:
- Complete: Unicode, redirects, compression, basic authentication, absolute/relative/local URLs.
- Fast: Concurrent, streamed and cached.
- Easy: Convenient defaults and very configurable.
- Support for many HTML elements and attributes; not only and .
- Support for relative URLs with .
- WHATWG specifications-compliant HTML and URL parsing.
- Honor robot exclusions (robots.txt, headers and rel), optionally.
- Detailed information for reporting and maintenance.
- URL keyword filtering with simple wildcards.
- Pause/Resume at any time.