Developer Toolbox

A small set of utilities for everyday backend work — encoders, JWT, JSON, fingerprint decoding and more.

Base64, URL, Hex, and HTML encoding.

Convert binary files to strings and back.

FBI-standard fingerprint image decoder.

Formatter, validator, and cross-converter.

Analyze tokens and verify signatures.

Build or reverse-engineer cURL requests.

MD5, SHA-1/256/512 and HMAC.

Case conversion and string manipulation.

Unix epoch and ISO 8601 conversions.