인코더 및 암호
X.509 인증서 디코더
Subject, issuer, validity, SAN, fingerprint — all at a glance.
Paste a PEM certificate and click Decode.
편집자 노트
Understanding · The certificate format that runs the internet.
이 심층 챕터는 현재 영어로만 제공됩니다. 위의 변환 도구는 귀하의 언어로 작동하지만, 긴 설명 글은 아직 번역되지 않았습니다.
자주 묻는 질문
Quick answers.
›What certificate formats are supported?
The tool supports PEM format, which typically starts with `-----BEGIN CERTIFICATE-----`, as well as binary DER files. It can also parse Certificate Signing Requests (CSRs).
›Is my certificate data secure?
Yes. The decoding process is performed entirely within your web browser. No certificate data or metadata is ever uploaded to our infrastructure.
›What information can I see in the output?
You can view the Common Name (CN), expiry dates, serial number, public key algorithm, and fingerprints (SHA-1 and SHA-256). It also highlights if a certificate is currently expired.
›Can it decode a chain of certificates?
If you paste a bundle containing multiple certificates, the tool will decode and display the details for each individual certificate in the order they appear.
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