Please recommend a tool that checks for broken links on a web site.

not required, but would be nice to have:

  • checks standards-compliance of the HTML, CSS, Javascript, ...
  • displays permanent redirects

1 Answer 1



LinkChecker is a free, GPL licensed URL validator.


  • 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

It's also in Debian Lenny: aptitude install linkchecker and in the FreeBSD ports: /usr/ports/www/linkchecker

  • That's a great tool! I find it very useful to validate the links in my project. Thanks to both!
    – Barun
    Commented Jan 18, 2011 at 7:02
  • Why add a note about Lenny? Here, we are trying to keep things generic, if we can help it.
    – tshepang
    Commented Jan 18, 2011 at 8:30
  • 8
    @Tshepang: Because I'm trying to be useful. Does it bother anyone? Stop being pedantic, please. Commented Jan 18, 2011 at 14:04
  • 3
    @Tshepang: I disagree. I think it's a useful note that doesn't take away from anyone else - the source is still in the first link. Having said that, if a moderator asks me to remove it I will do so. Commented Jan 18, 2011 at 15:40
  • 2
    Note that wummel stopped development of LinkChecker in 2016. Active development continues in the linkchecker/linkchecker repo. Unfortunately, Google still (as of late 2020) returns the old wummel repo as the first hit if you search for LinkChecker. Commented Sep 29, 2020 at 10:14

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