100% local processing - your files and data never leave your browser.
No accounts, no tracking - we don't save your credentials, files, or usage.
Free forever - donations are welcomed, but every tool is and always will be free.
Open in spirit - need a special tools..? Drop a message.
FREE TOOL - JWT INSPECTOR - NO UPLOAD

JWT
DECODER

Decode JSON Web Tokens, inspect claims, check expiry, and verify HS256 signatures locally in your browser.

Decode JWT - Free All 114 Tools
HEADERPAYLOAD
Decode Claims
Pretty-print header and payload JSON.
Expiry Check
See if exp/nbf/iat claims are active.
HS256 Verify
Verify HMAC signatures with a secret.
Issuer + Audience
Inspect common identity claims.
Copy JSON
Copy decoded sections quickly.
Private
Tokens and secrets never leave your browser.
The Tool

DECODE JWT

jwt.php - readyLIVE

Header

Payload

-algorithm
-expires
-issuer
-subject

Verify HS256 Signature

Paste a JWT to decode.
Process

HOW IT WORKS

JWTs are split into header, payload, and signature.

01
Paste token
Add a compact JWT string.
02
Inspect JSON
Review header, claims, and expiry.
03
Verify optionally
Use a secret for HS256 signature checks.
FAQ

COMMON QUESTIONS

No. Decoding only reads JSON. Verification checks the signature.

No. Decoding and HS256 verification happen locally.

This browser tool verifies HS256 signatures.

Yes. The tool reads exp, nbf, and iat claims when present.

Usually no. Standard JWT payloads are readable Base64URL JSON.

Use care. The secret stays local, but avoid exposing sensitive secrets on shared machines.
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