JWT Decoder

What is JWT Decoder?

JWT Decoder is a focused debugging helper for everyday API and web development tasks. Decode JWT header and payload JSON without verifying signatures.

The tool runs locally after the page loads, making it suitable for quick checks while keeping copied strings, tokens, and snippets off remote utility services.

How to use JWT Decoder

Paste the value you want to inspect or transform, adjust any visible options, then run JWT Decoder. Use the output editor for copying, downloading, searching, or folding structured results.

Available actions

• Decode JWT
• Import JSON file
• Copy output
• Download output
• Create expiring JSON share link
• Collapse all
• Expand all
• Escape JSON string
• Unescape JSON string
• Generate sample JSON
• Simple sample
• Medium sample
• Complex sample
• Back to top
• Back to bottom
• Find in editor
• Previous match
• Next match
• Replace all
• Close search panel

Example

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjMiLCJuYW1lIjoiQWRhIiwiaWF0IjoxNzE3MjAwMDAwfQ.signature

{
  "header": {
    "alg": "HS256",
    "typ": "JWT"
  },
  "verified": false
}