Developer Tools
Small utilities that developers and designers reach for every day: pretty-print and validate JSON, encode and decode Base64 (with full Unicode support), generate strong random passwords and UUIDs, and convert colors between HEX, RGB, HSL and CMYK.
Everything runs locally in your browser. Passwords and UUIDs are generated with your browser's cryptographically secure random number generator, and nothing you enter is sent to a server.
JSON Formatter & ValidatorFormat, validate and minify JSON.Base64 Encoder & DecoderEncode text to Base64 or decode Base64 back to text, with full UTF-8 support for accents and emoji, and an option for URL-safe Base64 (Base64url).Password GeneratorGenerate strong random passwords with a secure generator in your browser.UUID GeneratorGenerate random version 4 UUIDs or time-ordered version 7 UUIDs (GUIDs) in bulk, in lowercase or uppercase, with or without hyphens.Color ConverterConvert colors between HEX, RGB, HSL, HSV and CMYK, preview the color, and check its WCAG contrast ratio against white and black text.