Simple WCAG Contrast Checker

Simple WCAG Contrast Checker opens a floating panel on any webpage
when you click the toolbar icon. The panel automatically scans all
visible text and highlights elements that fail the selected contrast
standard with a red overlay showing the contrast ratio.

Click any highlighted element to open the color editor. Adjust the
foreground or background color and the contrast ratio updates live.
Toggle between WCAG AA (4.5:1) and AAA (7:1) standards with one click.

The panel is draggable, resizable, and has an opacity slider. Your
settings are saved automatically. Press Esc or click X to close.

No data is collected. All processing runs locally in your browser.