Encode / Decode Toolkit
Base64, URL and Hex encoding, a JWT decoder, and file-to-Base64 conversion — all in your browser. Nothing is sent anywhere.
Base64
URL
Hex
JWT Decoder
File → Base64
Couldn't decode that — it doesn't look valid for this mode.
That doesn't look like a valid JWT (expected 3 parts separated by dots).
Click to choose a file, or drag one here
Encode and decode safely in your browser
Convert text to and from Base64, URL encoding and Hex, decode JWT tokens to inspect their header and claims, and turn files into Base64. Processing happens in your browser, so your data stays on your device. Working with URLs? Try the UTM Link Parser.