Issue date
When the current certificate was issued. Modern certificates last 90 days to a year.
Free SEO tool
Check when a site’s SSL certificate was issued and when it expires
Enter a site address and see the dates on its SSL certificate. An expired certificate shows every visitor a security warning instead of your site, and Chrome blocks certificates from distrusted authorities outright.
SSL Certificate Checker
Run the tool above and the result appears here.
What it checks
What the SSL Certificate Checker looks at
Expiry date
When it stops being valid. Put it in the calendar, or confirm auto-renewal is working.
Distrusted certificates
Flags certificates from authorities Chrome no longer trusts, which are blocked rather than warned about.
HTTPS as a ranking signal
Google has used HTTPS as a ranking signal since 2014 and marks plain HTTP pages as not secure.
How to read it
What to do if the certificate is about to expire
What to do if the certificate is about to expire
If your host issues certificates automatically (Let’s Encrypt and most managed WordPress hosts do), check that the renewal job is running; a certificate within 14 days of expiry on an auto-renewing host usually means the renewal is failing. If you bought the certificate, renew it with the vendor and install the new one before the date.
The mixed-content trap
A valid certificate is not enough. If the page loads any image, script or font over plain HTTP, browsers downgrade the padlock or block the file. Our website maintenance plans include a monthly check for exactly this.
More free tools
Keep checking
Every tool is free and most run in seconds.
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Learn more ↗SEO Page Analyzer
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Written and reviewed by
Kateryna QuinnFounder and CEO, aStash. Forbes Next 1000, NOCO Style 30 Under 30Kateryna founded aStash in Fort Collins in 2017. The free tools on this site are the checks her team runs on every client page; the ssl certificate checker is the same check, opened up so you can run it yourself.
FAQ
Questions about this tool
Anything else? (970) 399-9004 reaches a person in Fort Collins, not a call center.
My site shows a padlock but the tool says it expires soon. Is that a problem?
Not yet. It becomes one on the expiry date. Check that auto-renewal is configured, or renew now.
What does a Symantec or distrusted certificate warning mean?
Chrome and Firefox stopped trusting certificates issued by Symantec’s old authorities. A site still using one is blocked, not just warned. Replace it with a certificate from any current authority.
Does HTTPS slow my site down?
No. With HTTP/2, which requires HTTPS, most sites load faster than they did over plain HTTP.
Can you handle this for me?
Yes. Certificate monitoring and renewal is part of every aStash website maintenance plan.