Quick Dev Tools

Small, focused utilities for developers. No accounts, no uploads, no configuration — everything runs locally in your browser.

• Base64 converter

  Encode and decode text as Base64 — live and UTF-8 aware.

• Timestamp converter

  Convert Unix timestamps to dates and back, in any timezone.

• Regex tool

  Test regular expressions live, with a handy syntax cheatsheet.

• Hex editor

  Inspect and edit binary data as hex, byte by byte.

• UUID generator

  Generate v4 and v7 UUIDs — single or in batch.

• URL encoder/decoder

  Percent-encode text and take URLs apart into editable pieces.

• JWT decoder

  Decode a JWT's header and payload, and check its time claims.

• JSON formatter

  Format, minify, and explore JSON as a tree — with precise error locations.