How to use Check Digital Certificate
- Paste the text you need to check into the input box.
- Tune the Paste a digital certificate (PEM) control before you check.
- Check Digital Certificate updates the output automatically as you type.
- Use Copy to keep or reuse the result.
About this tool
Check Digital Certificate is a static, client-side tool with no backend. Check Digital Certificate parses the X.509 fields of a certificate you paste, locally.
Export a site certificate from the browser padlock as PEM to inspect it here. Nothing you enter is uploaded, and it keeps working offline once the page has loaded.
Frequently asked questions
What does Check Digital Certificate do?
Use Check Digital Certificate to check your input without installing anything using the Paste a digital certificate (PEM) control; everything happens client-side.
Do I need an account for Check Digital Certificate?
No — Check Digital Certificate needs no account, sign-up or installation.
Is my input private in Check Digital Certificate?
Yes — your input never leaves your device; Check Digital Certificate does all the work in your browser.
How do I inspect a live site's certificate with Check Digital Certificate?
Export the certificate from your browser's padlock as PEM and paste it into Check Digital Certificate; it decodes the fields locally.
Does Check Digital Certificate work offline?
Once the page has loaded, Check Digital Certificate keeps working with no network connection.