Check websites for broken links

LinkChecker is a free, GPL licensed URL validator and site crawler.

Mac OS X port

The OS X system I used to develop and generate the DMG installer is unfortunately no longer available to me. So unless some really nice people sponsor a Mac for development, there will be no more DMG installer releases.

Of course you can always install LinkChecker from source or generate the installer yourself (see install.txt).

Features

• recursive and multithreaded checking and site crawling
• 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
• HTML5 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 free linkcheckers.