Office Dev Tools
A fast, privacy-first collection of utilities for developers and office work. Every conversion runs entirely in your browser.
JSON
Encoding
Base64
Encode and decode Base64 and Base64URL.
Hash Generator
Generate hashes, HMACs, and derived keys — MD5, SHA, BLAKE, PBKDF2, bcrypt, Argon2.
URL Encoder / Decoder
Percent-encode or decode text, and parse a URL's query string into key/value pairs.
Password Generator
Generate strong random passwords — choose length, character sets, and minimums. Runs entirely in your browser.
JWT Inspector
Decode a JWT's header and payload, inspect claims and expiry, and verify HS256/384/512 signatures.
UUID / ULID Generator
Generate UUID v4, UUID v7, and ULID identifiers in bulk, using the Web Crypto API.
Number Base Converter
Convert integers between binary, octal, decimal, and hexadecimal, with a bit-by-bit view.