Check websites for broken links

LinkChecker is a free, GPL licensed URL validator.

Features

• recursive and multithreaded checking
• output in colored or normal text, HTML, SQL, CSV, XML or a sitemap graph in different formats
• HTTP/1.1, HTTPS, FTP, mailto:, news:, nntp:, Telnet and local file links support
• restriction of link checking with regular expression filters for URLs
• proxy support
• username/password authorization for HTTP and FTP and Telnet
• honors robots.txt exclusion protocol
• Cookie support
• HTML and CSS syntax check
• Antivirus check
• Different interfaces: command line, GUI and web interface
• ... and a lot more check options documented in the manual page.

Screenshots

Commandline interface	GUI client	CGI web interface

Basic usage

To check a URL like http://www.example.org/myhomepage/ it is enough to enter http://www.example.org/myhomepage/ in the GUI client or web interface, or execute linkchecker http://www.example.org/myhomepage/ on the command line.

This check will validate recursively all pages starting with http://www.example.org/myhomepage/. Additionally, all external links pointing outside of www.example.org will be checked but not recursed into.

Other linkcheckers

If this software does not fit your requirements, you can check out other linkcheckers.