How to use SSL Labs SSL Test
- Paste or load a PEM certificate into SSL Labs SSL Test.
- Click Parse certificate — SSL Labs SSL Test processes everything on your device.
- Read the subject, issuer, validity dates and expiry that SSL Labs SSL Test lays out for you.
About this tool
There is no server behind SSL Labs SSL Test. Paste a PEM certificate and SSL Labs SSL Test parses the X.509 fields entirely on your device.
To check a live site, export its certificate from the browser padlock as PEM and paste it here. Your input never leaves the page, and no account or install is required.
Frequently asked questions
What is SSL Labs SSL Test for?
Use SSL Labs SSL Test to check your input without installing anything; everything happens client-side.
Do I need an account for SSL Labs SSL Test?
No — SSL Labs SSL Test needs no account, sign-up or installation.
Where is my data processed by SSL Labs SSL Test?
Entirely in your browser — SSL Labs SSL Test keeps your data on your own machine and sends nothing anywhere.
How do I inspect a live site's certificate in SSL Labs SSL Test?
Export the certificate from your browser's padlock as PEM and paste it into SSL Labs SSL Test; it decodes the ASN.1/DER fields entirely on your device.
Can I use SSL Labs SSL Test without a connection?
Yes — after the first load SSL Labs SSL Test runs entirely offline.