Dev API

Same bearer token, same credit pool, same JSON envelope as every other endpoint — drop them into apps, sites, workflows, or agents without rebuilding formulas, validation, or docs.

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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

Data Conversion

CSV to JSON Convertercsv-to-json-converter

Convert CSV text to JSON with delimiter auto-detection and type inference.

1cr · v2026-04-22

JSON to CSV Converterjson-to-csv-converter

Flatten a JSON array into CSV with auto-detected record path, dot or bracket key flattening, configurable delimiter, quoting, and line endings.

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

Base64 Encoderbase64-encoder

Encode UTF-8 text as standard, URL-safe, or MIME line-wrapped Base64.

1cr · v2026-04-22

JWT Decoderjwt-decoder

Decode a JWT header and payload without verifying the signature, with registered claims and UTC claim times.

1cr · v2026-04-22

URL Decoderurl-decoder

Decode percent-encoded URL text with optional plus-as-space handling and multi-layer detection.

1cr · v2026-04-22

URL Encoderurl-encoder

Percent-encode text for URLs using RFC 3986, query-string, path, or full encoding modes.

1cr · v2026-04-22

URL Parserurl-parser

Break a URL into scheme, host, port, path, decoded query parameters, and fragment.

1cr · v2026-04-22

Scheduling

Cron Job Generatorcron-job-generator

Generate a cron expression from common schedule presets.

1cr · v2026-04-22

Crontab Expression Generatorcrontab-expression-generator

Build and validate a crontab expression from individual fields.

1cr · v2026-04-22