Need to format JSON from an API response? The Wivrix JWT Decoder is free, works in your browser, and takes seconds to use.
What this tool does
Decode JSON Web Token header and payload, build new JWTs, see live expiry countdown, and view claim descriptions. Client-side only — your token never leaves your browser.
Why use Wivrix?
Many online tools ask you to sign up, add a watermark, or upload your files to a server you cannot see. Wivrix is different:
- Private by design — Everything runs in your browser. Your files and input stay on your device — nothing is uploaded to Wivrix.
- Free — no account, no paywall, no file-size tricks
- Fast — open the page and start working
Step-by-step guide
- Header — algorithm and token type
- Payload — claims like user ID, role, and expiration ( exp )
- Signature — verifies the token wasn't tampered with
Common uses
- Format json from an api response
- Decode a jwt during debugging
- Test a regular expression quickly
- Convert yaml config to json
Frequently asked questions
Do I need an account?
No. Open the tool and use it straight away.
Is the JWT Decoder really free?
Yes. Wivrix tools are free to use. The site is supported by ads that load only after you consent.
Is my data safe?
Everything runs in your browser. Your files and input stay on your device — nothing is uploaded to Wivrix.
Try it now
Open the free JWT Decoder and follow the steps above. If this guide helped, bookmark the tool or share it with someone who needs the same job done quickly.
Related tools
- JSON Formatter & Validator — see also our guide
- Base64 Encoder / Decoder — see also our guide
- Hash Generator (SHA-1, SHA-256, MD5) — see also our guide
Ready to try it? Open the free JWT Decoder — no sign-up needed.
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