2013-11-30 21:04:50 +00:00
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title: Check websites for broken links
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---
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Introduction
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-------------
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LinkChecker is a free, [GPL](http://www.gnu.org/licenses/gpl-2.0.html)
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licensed website validator.
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LinkChecker checks links in web documents or full websites.
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2014-09-11 17:43:06 +00:00
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It runs on Python 2 systems, requiring Python 2.7.2 or later.
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Python 3 is not (yet) supported.
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2013-11-30 21:04:50 +00:00
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Features
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---------
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- recursive and multithreaded checking and site crawling
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- output in colored or normal text, HTML, SQL, CSV, XML or a sitemap
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graph in different formats
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- HTTP/1.1, HTTPS, FTP, mailto:, news:, nntp:, Telnet and local file
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links support
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- restriction of link checking with regular expression filters for URLs
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- proxy support
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- username/password authorization for HTTP and FTP and Telnet
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- honors robots.txt exclusion protocol
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- Cookie support
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- HTML5 support
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2014-02-28 23:12:34 +00:00
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- [Plugin support](plugins.html)
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allowing custom page checks. Currently available are
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HTML and CSS syntax checks, Antivirus checks, and more.
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2016-01-23 12:28:15 +00:00
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- Different interfaces: command line and web interface
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2013-11-30 21:04:50 +00:00
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- ... and a lot more check options documented in the
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[manual page](man1/linkchecker.1.html).
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Screenshots
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------------
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2016-01-23 12:28:15 +00:00
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[](images/shot1.png) | [](images/shot3.png)
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--------------------------------------------------------------|--------------------------------------------------------------
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Commandline interface | CGI web interface
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2013-11-30 21:04:50 +00:00
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Basic usage
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------------
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To check a URL like `http://www.example.org/myhomepage/` it is enough to
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2016-01-23 12:28:15 +00:00
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enter `http://www.example.org/myhomepage/` in the web interface, or execute
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2013-11-30 21:04:50 +00:00
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`linkchecker http://www.example.org/myhomepage/` on the command line.
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This check will validate recursively all pages starting with
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`http://www.example.org/myhomepage/`. Additionally, all external links
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pointing outside of `www.example.org` will be checked but not recursed
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into.
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Other linkcheckers
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-------------------
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If this software does not fit your requirements, you can check out
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[other free linkcheckers](other.html).
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2013-12-04 19:05:50 +00:00
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Test suite status
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------------------
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2014-03-31 06:46:39 +00:00
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Linkchecker has extensive unit tests to ensure code quality.
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2020-03-31 10:08:51 +00:00
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[Travis CI](https://travis-ci.com/) is used for continuous build
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2013-12-04 19:05:50 +00:00
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and test integration.
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2020-03-31 10:08:51 +00:00
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[](https://travis-ci.com/linkchecker/linkchecker)
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