Free online utility · Gentooly
Decode a JSON Web Token
Paste a JWT to read its header and payload claims, such as expiry time and subject. Handy when debugging authentication.
Use the interactive tool to complete your task. Core utilities are free to use. AI Studio, our separate AI product, is coming soon.
Use JWT Decoder →How to use this tool
- Open the JWT Decoder and paste your token.
- Read the decoded header and payload.
- Check claims such as the expiry (exp) time.
Common questions
Does decoding verify the token?
No. Decoding only reads the header and payload. It does not prove the signature is valid, so never trust a token based on decoding alone.
Is it safe to paste a real token?
Treat tokens like passwords. Avoid pasting live production tokens into any online tool you do not control.
Can I decode Base64 text separately?
Yes, use the Base64 Decoder.