Outcome
A separated view of decoded fields, verification status, weak algorithms, expiry timestamps, and supporting certificate material.
Workflow
JWT 디코딩과 서명 검증을 구분해 토큰과 키 자료를 확인합니다.
Use this path before debugging JWT claims, certificates, JWKs, or hash evidence copied from an auth incident or staging integration.
A separated view of decoded fields, verification status, weak algorithms, expiry timestamps, and supporting certificate material.
These workflow pages do not process, collect, or store tool input. Use the linked tools directly and review their trust badges before handling sensitive data.
Start with the local token decoder to inspect header and payload fields while keeping signature verification as a separate step.
JWT 디코더Review exp, nbf, iat, and alg values, especially none, MD5-era hashes, and tokens copied from untrusted channels.
JWT 워크벤치Use the verifier with the expected secret or public key before treating decoded claims as trustworthy.
JWT 서명 검증기Normalize JWKs, public keys, and certificate data when the verification key is unclear.
공개 키 JWK 도우미JWT 페이로드를 로컬에서 디코딩하고 클레임을 확인합니다.
로컬 우선 워크스페이스 하나에서 JWT 인코딩, 디코딩, 검증을 처리합니다.
JWT 서명(HMAC)을 검증하고 클레임을 확인합니다. 모두 클라이언트 측에서 처리.
PEM/SPKI 공개 키와 JWK를 브라우저에서 로컬로 변환하고 키 메타데이터와 RFC 7638 지문을 확인합니다. 키 자료는 업로드되지 않습니다.
PEM 인코딩된 X.509 인증서를 디코딩하고 모든 세부 정보를 로컬에서 확인합니다.
MD5, SHA1, SHA256, SHA512 해시를 빠르게 생성합니다.
Avoid common JWT handling mistakes when reviewing decoded or verified tokens.
Understand certificate chain fields before debugging key and token verification.
Choose hash algorithms deliberately when reviewing evidence or compatibility.
No. Decoding only makes the header and payload readable. Verification requires the expected algorithm and key material.
Inspect certificates when the signing key chain, public key format, or issuer data is part of the verification question.
Share only redacted claims that are necessary for the review. Remove tokens, subject identifiers, emails, and organization-specific secrets.