WCAG contrast checker
Measure text contrast and check WCAG AA and AAA thresholds.
More Developer tools
Format JSON, convert data, preview Markdown, and more.
- JSON FormatterPretty-print JSON with consistent indentation.
- JSON MinifierRemove insignificant whitespace from valid JSON.
- JSON ValidatorCheck JSON syntax and identify its root value type.
- JSON ViewerInspect safely rendered, formatted JSON as plain text.
- JSON to XMLConvert JSON values into escaped, well-formed XML.
- URL EncoderPercent-encode text for a URL component.
- URL DecoderDecode a percent-encoded URL component.
- HTML Entity EncoderEscape text for display in HTML source.