💻 Developer toolkit

A focused set of in-browser utilities for everyday coding: format JSON, decode tokens, generate hashes and IDs, and test patterns without installing anything.

JSON formatterValidate, pretty-print, and minify JSON.
JWT decoderView JWT header and payload as JSON (no signature verify).
Hash generator (SHA)SHA-256 / SHA-384 / SHA-512 digests via Web Crypto.
UUID v4 generatorGenerate random UUID v4 identifiers and copy them.
Regex testerHighlight regex matches with flags.
Base64 encode / decodeEncode and decode UTF-8 text with Base64.
URL encode / decodeencodeURIComponent and decodeURIComponent helpers.
Number base converterConvert binary, octal, decimal, hexadecimal.
Unix timestamp converterUnix sec/ms ↔ human date; now button.