How to use DigiCert SSL Test
- Add a PEM certificate to DigiCert SSL Test to get started.
- Click Parse certificate — DigiCert SSL Test processes everything on your device.
- Read the subject, issuer, validity dates and expiry that DigiCert SSL Test lays out for you.
About this tool
There is no server behind DigiCert SSL Test. Paste a PEM certificate and DigiCert SSL Test parses the X.509 fields entirely on your device.
The expiry countdown is computed locally, and nothing about the certificate is transmitted. Your input never leaves the page, and no account or install is required.
Frequently asked questions
What does DigiCert SSL Test do?
Use DigiCert SSL Test to check your input without installing anything; everything happens client-side.
Does DigiCert SSL Test cost anything?
No — DigiCert SSL Test is completely free, with no sign-up and no hidden limits.
Is my input private in DigiCert SSL Test?
Yes — your input never leaves your device; DigiCert SSL Test does all the work in your browser.
How do I inspect a live site's certificate in DigiCert SSL Test?
Export the certificate from your browser's padlock as PEM and paste it into DigiCert SSL Test; it decodes the ASN.1/DER fields entirely on your device.
Can I use DigiCert SSL Test without a connection?
Yes — after the first load DigiCert SSL Test runs entirely offline.