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JWT Decoder Online — Free Tool

Safely decode JSON Web Tokens (JWT) to inspect their headers and payloads in a readable format.

JWT
Decodes header/payload locally. This tool does not verify signatures.
Paste a JWT to decode it.
Privacy note: All processing happens entirely in your browser. No data is sent to our servers.

About this tool

JWT Decoder helps developers safely decode json web tokens (jwt) to inspect their headers and payloads in a readable format. Paste your payload or source text, run the tool, and copy the output into your editor, API client, or terminal.

Everything runs locally in the browser, which keeps tokens, queries, and proprietary data off third-party servers.

How to use

  1. Paste or type your input in the tool panel above.
  2. Choose formatting or conversion options if available.
  3. Copy the output for use in your document or project.

This page is available at /tools/jwt-decoder/.

Related keywords

  • jwt decoder
  • decode jwt
  • jwt parser
  • jwt header
  • jwt payload
  • jwt exp

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FAQ

What is JWT Decoder?

JWT Decoder is an online developer tool that safely decode JSON Web Tokens (JWT) to inspect their headers and payloads in a readable format.

How do I use the JWT Decoder?

Paste your code, JSON, token, or query into the editor, run the tool, and copy the formatted or converted result into your project.

Is this tool free?

Yes—this tool is free to use with no account required.

Does it run locally in the browser?

Yes. Calculations and transformations run in your browser—your input stays on your device.