UtilFoundryDEV TOOLS

JWT Decoder

Read the header and payload of a JSON Web Token without verifying or transmitting it. The token never leaves this tab.

  • 100% Free
  • No account required
  • Runs in your browser
  • No data is uploaded
Local saving paused

Private to this browser, not a cloud backup. Saves expire 7 days after the last save. Avoid saving sensitive data on shared devices.

Local saving is disabled for this sensitive tool. Use sanitized test data and clear the editor when finished.

Saved JWT Decoder workspaces

Saved only on this device. Clearing browser data removes your workspaces. Expired saves are removed when this app next checks storage.

No saved workspaces for this tool yet.

No settings needed
JWT to Decoded header and payload

Input

Paste or edit your token, then click “Run tool”.

Type, paste or drop a file
JWT
Ln 1, Col 1Spaces: 2UTF-881 bytes

Output

Decoded header and payload (read-only).

Read-only
Text
Ln 1, Col 1Spaces: 2UTF-80 bytes
Ready when you arePaste your input, then press Run tool or ⌘ ↵