HTML & CSS W3C Validator Pro vs Used CSS

Adoption and growth comparison · shareable link

Growth comparisons appear once each plugin has a reliable 7- or 30-day baseline.

HTML & CSS W3C Validator Pro vs Used CSS: users compared over last 90 days.

Comparison of HTML & CSS W3C Validator Pro, Used CSS
Plugin	Metric	Current	7d	30d	Daily rate (30d)	Rank	Rating	Ratings / day	Updated
HTML & CSS W3C Validator ProChrome Web Store	Users	~197	—	—	—	#2877	4.4	—	Stale · Oct 22, 2026
Used CSSChrome Web Store	Users	~203	—	—	—	#2840	—	—	Outdated · Oct 18, 2026