Site Contrast - Full Page WCAG 2.2 & APCA Contrast Checker

by erikdevriesonline@gmail.com · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Scan any website and instantly find text with poor contrast. Unlike basic checkers, this tool works on real-world sites with image…

Users

2,000

0 in 30 days

Rating

4.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#22K

#19K among extensions

Version

0.2.3

updated 10 Jan 2026

Users

monthly, 13 months

Latest, 15 Oct 2026: 2,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 13 months

Latest, 15 Oct 2026: 4 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Site Contrast - Full Page WCAG 2.2 & APCA Contrast Checker

Scan any website and instantly find text with poor contrast. Unlike basic checkers, this tool works on real-world sites with image backgrounds, gradients, transparencies, and all. ✅ Detects issues across the entire page in one scan ✅ Works with modern color formats (HEX, RGB, HSL, P3, OKLCH) ✅ Tests with both WCAG 2.2 and the newer APCA contrast standards ✅ Highlights where text passes, fails, or needs review Perfect for designers, developers, and accessibility specialists who want future-proof contrast testing in a single click.