Check WCAG contrast ratio between text and background colors.
Thumbnail Text Checker v2
Advanced thumbnail text analysis with readability score and mobile preview.
Thumbnail Text Shortener
AI shortens long thumbnail text to 3-6 punchy words.
Profile Picture Crop Previewer
Preview how your image looks as a circular profile picture across platforms.
Social Image Resizer
Resize images to exact dimensions for any social platform.
Details
Input
Output
Contrast Ratio
21.00:1
AA Normal
PASS
Min 4.5:1
AA Large
PASS
Min 3:1
AAA Normal
PASS
Min 7:1
AAA Large
PASS
Min 4.5:1
For thumbnails, aim for at least AA Large (3:1) contrast ratio. Higher contrast ensures readability at small sizes.