Installing W3C Markup Validator on Debian Jessie

Posted on 13-03-2017 by Nadir Latif

The W3C Markup Validator is a useful tool that allows validating html text. It can be used to check if a given web page or text conforms to the html 5 standard. The following points may be considered during installation of W3C markup validator:

  1. local copy of validator is more reliable and easy to use for bulk use
  2. W3C Markup Validator supports validation of html,xml, xhtml, html5, mathml and more
  3. html5 validation requires validator.nu installation
  4. deb file not available in default repository for Debian Jessie
  5. W3C Markup Validator has to be installed from source. install guide given on: https://validator.w3.org/docs/install.html
  6. install guide for mod_perl from source (https://perl.apache.org/docs/2.0/user/install/install.html
  7. following perl module had to be installed: SGML-Parser-OpenSP
  8. libperl-dev package required for mod_perl compilation (http://tara24.de/fix-configure-errorperl-development-headers-found/)
  9. java 8 required for validator.nu
  10. java 8 for debian jessie requires backport repository (http://backports.debian.org/Instructions/)

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