mkdiff.com

Developer Tools

JWT Decoder

Decode JWT header and payload data locally without verifying or uploading the token.

Header
{
  "alg": "HS256",
  "typ": "JWT"
}

Payload
{
  "sub": "mkdiff",
  "iat": 1700000000
}

Signature
signature

JWT Decoder online

Use JWT Decoder in the browser for quick code diff and formatting workflows. MKDiff keeps the page focused on practical input, preview, and review steps so you can finish a one-off task without installing a desktop utility.

Use JWT Decoder online for quick browser tasks.
Work without account registration.
Keep related comparison and formatting tools nearby.