PEM
-----BEGIN CERTIFICATE----- ... -----END CERTIFICATE-----
Result
Validity and subject field summary
Developer Tools
PEM X.509 Certificate Parser
Parse PEM X.509 certificates locally to read validity, subject-related fields, and DER size. Lightweight inspection without full chain trust validation.
SSLCertificateX.509
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开发工具
SSL Certificate Parser
粘贴 PEM 格式的 X.509 证书（`-----BEGIN CERTIFICATE-----`），在浏览器本地解析，无需上传。
PEM Input
Parsed Details Waiting
NO CERTIFICATE
Note: This employs a lightweight internal Base64 ASN.1 heuristic parser meant for instant sanity checks. Extraneous deeply nested extensions are omitted.
Use cases
- Check domain and expiry on a crt file
- Confirm a PEM paste is complete
- Review certificate fields while troubleshooting
How to use
- Paste a full BEGIN CERTIFICATE block
- Review validity and readable fields
- Check expiry and subject details
Example input and output
FAQ
Does it validate the chain?
No. This is a lightweight field viewer, not full PKI validation.
Is data uploaded?
No. Parsing runs entirely in the browser.
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