W3C Validator guide

W3C Validator guide


The W3C Validator guide provides a simple walk-through to build the W3C HTML validation service from its source.

Written in collaboration with the developers of SiteValidator, onarray used Vagrant to manage a virtualised environment in order to guarantee reproducibility.


Working with Tom [of onarray] has been a great experience.

He’s an awesome hacker with plenty of experience in sysadmin. His communication has been very responsive and friendly, and he got the mission accomplished really fast.

Jaime Iniesta, SiteValidator founder