Free Web Utilities & Developer Tools

Fast, secure browser-based tools that require no installation, no extensions, and no accounts. Just paste your data and get to work.

JSON / Dev

Format, validate, and minify JSON with instant error detection.

Encode text to Base64 or decode Base64 back to text, with full UTF-8 support.

Decode a JWT's header and payload to inspect its claims — no signature verification.

Generate strong, random passwords using cryptographically secure randomness.

Generate one or many RFC 4122 version 4 UUIDs instantly.

Strip em-dashes, curly quotes, filler phrases, and hidden watermark characters from pasted text.

Convert Unix timestamps to human-readable dates (UTC, local, ISO 8601) and back, both ways.

Convert a date and time between any two IANA timezones, with UTC offsets and DST handled automatically.

Calculate the duration between two dates — total days, weeks, months, years, and an exact breakdown, with an optional business-days count.

Convert colors between HEX, RGB, and HSL, with full alpha/transparency support.

Break a URL down into protocol, host, port, path, query parameters, and fragment.

Build a linear, radial, or conic CSS gradient visually, with live preview and copy-pasteable code.