Ecosystems:
JavaScript
validator
Command-line access to https://validator.w3.org/nu/
$ w3cvalidate index.html
index.html: The Content-Type was text/html. Using the HTML parser.
index.html: Using the schema for HTML with SVG 1.1, MathML 3.0, RDFa 1.1, and ITS 2.0 support.
index.html:124:7: info: 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).
index.html:133:3: info: Section lacks heading. Consider using h2-h6 elements to add identifying headings to all sections.
⚠️ Deprecation notice
It's better to use curl with the validator.w3.org's ?out=gnu setting.
alias w3cvalidate='curl -H "Content-Type: text/html; charset=utf-8" --data-binary @- "https://validator.w3.org/nu/?out=gnu"'
cat FILE_TO_VALIDATE.html | w3cvalidate
Usage
Command-line via Node.js/iojs:
npm install -g w3cvalidate
w3cvalidate <FILE>
Programmatic usage via JavaScript:
var validate = require('w3cvalidate')
validate('<!doctype html>...')
.then(function (res) {
res.errors === 0
res.warnings === 0
res.results === [
{
type: 'info',
line: 2,
column: 3,
message: 'Section lacks heading. Consider using h2-h6...'
}
]
})
Thanks
w3cvalidate 2015+, Rico Sta. Cruz. Released under the MIT License. Authored and maintained by Rico Sta. Cruz with help from contributors (list).
ricostacruz.com · GitHub @rstacruz · Twitter @rstacruz
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