a11y.css

Name: a11y.css
Rating: 3.33 (3 reviews)
Author: gael.poupard

a11y.css provides warnings about possible risks and mistakes that exist in HTML.

As of June 2026, a11y.css has 2,000 users and a 3.33/5 rating from 3 reviews in the Accessibility category.

gael.poupard Accessibility★ Featured

Chrome Web Store ↗.crx

Users0%

2.0K

2,000

Rating0%

3.33

3 reviews

Reviews0%

Version

2.1.0

Manifest V3

History

1 snapshots

Tracking since Apr 23, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 23, 2026	2.0K	3.33	3	2.1.0
Now	2.0K	3.33	3	2.1.0

Permissions & access

Permissions: activeTabtabsstoragescripting
Host access: None declared

Screenshots

About

First a11y.css was a bookmarklet inserting a stylesheet into the page.

This CSS file intends to warn developers about possible risks and mistakes that exist in HTML code. It can also be used to roughly evaluate a site's quality by simply including it as an external stylesheet.


This extension does the same, plus adds some tools:

— Outline focus (keyboard navigation)
— Show languages used (relies on lang attributes)
—Check alt and title attributes on images


You can submit your bugs on github.

Original bookmarklet code: Gaël Poupard
Extension code: Stéphane Deschamps
Thanks to Anthony Ricaud and Mathieu Pillard for their help!