For the complete documentation index, see llms.txt.

Dev API

5 endpoints — Same auth, same credit pool, same JSON envelope. Use them directly from apps, content sites, workflows, or agents without rebuilding formulas, validation, and docs for each tool.

Start free → View OpenAPI All categories
Color
CMYK to Hex Convertercmyk-to-hex-converter
Convert CMYK percentages to RGB, HEX, HSL, HSV, and contrast text color.
1cr · v2026-04-22
Hex to CMYK Converterhex-to-cmyk-converter
Convert a hex color to CMYK print percentages.
1cr · v2026-04-22
Hex to RGB Converterhex-to-rgb-converter
Convert a hex color to RGB, HSL, CMYK, and contrast metrics.
1cr · v2026-04-22
RGB to Hex Converterrgb-to-hex-converter
Convert RGB channels to hex, HSL, HSV, CMYK, and relative luminance.
1cr · v2026-04-22
Encoding
Base64 Decoderbase64-decoder
Decode standard or URL-safe Base64 text and return byte and character analysis.
1cr · v2026-04-22