Developer tools

JSON Formatter & Validator

Paste JSON to pretty-print it, minify it, or find exactly where it’s broken.

Base64 Encoder & Decoder

Convert text to Base64 and back, with emoji and accented characters handled correctly.

URL Encoder & Decoder

Encode values for query strings, encode whole URLs, or decode percent-encoded links back to plain text.

JWT Decoder

Paste a JSON Web Token to see its header, claims and expiry in plain English.

Unix Timestamp Converter

Convert epoch timestamps to readable dates and back, with automatic seconds/milliseconds detection and a live clock.

UUID Generator

Create cryptographically random v4 UUIDs, one at a time or in bulk.