Check text-to-background contrast for WCAG compliance. Pro plan required. Secure, fast, and ready for AI-native document workflows.
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Contrast ratios are analyzed
View the WCAG compliance report
WCAG AA requires 4.5:1 for normal text and 3:1 for large text.
WCAG AAA is the highest accessibility level, requiring 7:1 for normal text and 4.5:1 for large text. AA is the minimum standard.
Yes. Low contrast text is harder to read for everyone, especially users with low vision, color blindness, or in bright lighting conditions.
Increase the difference between text and background colors. The report shows exact ratios and suggests minimum color adjustments for compliance.
ZiaSign's contrast checker analyzes text-to-background color contrast ratios throughout your PDF. Verify WCAG AA and AAA compliance. Identify low-contrast text that may be difficult to read for users with low vision.
Also known as: pdf contrast check · wcag contrast ratio · pdf accessibility contrast · text contrast checker
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