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