Purpose
Option A
Inspect payload
Option B
Establish trust
FAQ Guide
JWT Decode vs Verify
Decoding a JWT only reads its contents. Verification checks the signature and rules that determine whether the token can be trusted.
Quick comparison
Needs secret/key
Option A
No
Option B
Yes
Safe assumption
Option A
Readable only
Option B
Policy-dependent
Questions and answers
Can anyone decode a JWT?
Yes. JWT payloads are commonly Base64URL encoded and should not contain secrets.
Does decoded data prove identity?
No. Trust requires proper signature verification and claim checks.
What should I check besides signature?
Check expiration, issuer, audience, and application-specific authorization rules.