JWT Inspector

Decode and explain the token

• Parses header and payload into a readable view with clear labeling.
• Shows algorithm info and highlights risky or unexpected configurations.
• Makes claim meaning obvious (issuer, audience, scopes/roles, subject).

Validate security-critical claims

• Checks expiry (`exp`), not-before (`nbf`), and issued-at (`iat`) expectations.
• Flags missing or overly-long expirations (tokens that live too long).
• Highlights common auth mistakes like missing `aud`/`iss` validation patterns.

Spot common JWT risk patterns

• Warns when claim sets look permissive or inconsistent (e.g., broad roles/scopes).
• Surfaces suspicious claim combinations that may indicate mis-issuance.
• Guides you on safe defaults (short TTLs, strict issuer/audience validation).

Actionable remediation guidance

• Provides specific next steps to fix what was detected (not generic advice).
• Gives safer configuration recommendations for your auth/JWT library setup.
• Helps you verify changes by rechecking an updated token configuration.

Paste Token

Drop in a JWT and SafeDev parses header, payload, and signature metadata.

Detect Risks

Flags common issues like missing expiry, weak alg usage, and risky claims.

Fix & Recheck

Get remediation guidance and validate a corrected token configuration.