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posthtml-w3c

W3C HTML Validation for PostHTML

Checks if HTML is valid to W3C standards using the W3C Validation Service

Install

(sudo) npm i -D posthtml-w3c

Usage

For general usage and build process integration see PostHTML Docs

Example using Node API

const fs = require('fs')
 
var posthtml = require('posthtml')
 
var validate = require('posthtml-w3c')()
 
var html = fs.readFileSync('./index.html', 'utf8')
 
posthtml([ validate ])
  .process(html)
  .then(result => console.log(result.html))

Output

PostHTML W3C Validation
-----------------------
 
⚠ info [14:5]
Consider using the “h1” element as a top-level heading only
(all “h1” elements are treated as top-level headings by many
screen readers and other tools).
 
⚠ info [19:5]
Consider using the “h1” element as a top-level heading only
(all “h1” elements are treated as top-level headings by many
screen readers and other tools).
 
⚠ info [18:5]
Consider using the “h1” element as a top-level heading only
(all “h1” elements are treated as top-level headings by many
screen readers and other tools).
 
⚠  3 Errors