Dev / ITpopular

JWT Decoder

Free online JWT decoder tool to decode and inspect JSON Web Tokens instantly. Paste any JWT token to view the decoded header, payload claims, and expiration time in human-readable format. Shows exactly when a token expires or how long ago it expired. Supports all standard JWT algorithms including HS256, HS384, HS512, RS256, RS512, ES256, and more. All processing runs 100% in your browser — your tokens are never sent to any server, making it completely safe to use with real production tokens.

input · jwt token

how to use

  1. 1.Paste your JWT token into the input field
  2. 2.The header and payload are decoded automatically
  3. 3.Check the expiry field shown in human-readable time
  4. 4.Copy the decoded JSON output using the copy button

frequently asked

Is it safe to paste my JWT here?

Yes — all decoding runs entirely in your browser using JavaScript. No data is sent to any server.

Can this tool verify the JWT signature?

Signature verification requires the secret key. This tool decodes and displays the payload claims only.

What JWT algorithms are supported?

This decoder supports all standard JWT algorithms including HS256, HS512, RS256, RS512, ES256, and more.