Nine small tasks, one instrument panel
Utilities engineers reach for a dozen times a day, built to be trusted.
No accounts, no upload spinner, no "processing" step that quietly sends your token to a server. Every tool below runs in your browser. Pick one, paste, done.
Sponsor
Toolbox — 7 instruments
JSON Formatter
01Pretty-print or minify JSON with line numbers and precise error location.
JSON Validator
02Check JSON syntax and get an exact line and column for the first error.
JWT Decoder
03Decode a JWT header and payload locally. Decoding is not verification.
UUID Generator
04Generate RFC 4122 v4 UUIDs one at a time or in bulk, with copy-all.
Base64 Encoder / Decoder
05Encode or decode text, including URL-safe Base64, both ways.
Timestamp Converter
06Convert Unix epoch seconds or milliseconds to readable dates and back.
Hash Generator
07Generate MD5, SHA-1 and SHA-256 digests of text, computed locally.
How this works
Local by default. Every transformation on this site — formatting, decoding, encoding, hashing — runs in JavaScript in your browser. Your JSON, tokens and text are never sent to a server, logged, or stored. You can disconnect from the network after the page loads and every tool still works.