DevbeltDevbeltAll tools
The developer toolbelt

Fast, private developer tools.

Clean, instant utilities that run entirely in your browser. No signup, no uploads, nothing stored on a server — just paste and go.

JSON
JSON Formatter
Format, validate, explore & share JSON instantly.
Encoding
Base64 Encode / Decode
Encode or decode Base64 — text or files, instantly.
Encoding
URL Encoder / Decoder
Percent-encode or decode text and URLs, instantly.
Encoding
JWT Decoder
Decode & inspect JSON Web Tokens, locally.