Opinionated in-browser code validator

Browser extension to validate (simple) webpages. Validating on HTML and CSS syntax errors and code standards.

Main validation code is located in: source/validate.js

Based on: https://github.com/notlmn/browser-extension-template

1. Clone this repo
2. Go to browser extension settings and load this extension's manifest.json file in the source folder
3. A new debug tools panel should appear where validation results appear of that page

HtML gets send to https://validator.w3.org/nu/

Checked if there is an <h1>

Finds and validates CSS classnames

TODO

• Add more non-descriptive classnames
• Improve detection using partial match

Duplicate CSS is found by comparing all CSS code blocks with eachother

Try to detect use of magic numbers (like margin-left: 23.5%)

font-size which are sometimes defined in rem and sometimes in px

Maybe find a menu element which is not a <nav>

Classes all the way except when there is no other way

Detect classnames and ids written with capitals

Try to detect comment which are not informative, but just 'old' code