SSL Checker: Verify the Padlock

Is your website's data safe from hackers? Use our ssl checker online to find out who issued your certificate and how many days are left until it expires.

Quick Tool Fact

An SSL Certificate is like a digital ID card for a website. It proves the site is real and creates a secure tunnel for your passwords and credit cards. If your SSL expires, browsers will warn visitors that your site is "Not Secure."

What is an SSL Certificate?

Imagine sending a secret letter in a clear envelope. Anyone at the post office can read it! That is what happens when you visit a website without SSL (HTTP). An SSL Certificate turns that clear envelope into a locked safe. Only you and the website have the key. When you see that little Padlock icon in your browser, it means AirOI Checker has verified that your data is traveling through a safe tunnel.

Boost Your Trust

People feel safe buying from a site with a green padlock. Without it, browsers will show a big "Not Secure" warning that scares users away.

Better Rankings

Google loves secure sites. Having a valid SSL is a confirmed "Ranking Factor," helping your website appear higher in search results.

Why certificates expire

Security is constantly changing. Certificates have an expiration date (usually 90 days to 1 year) to ensure the website owner still controls the domain and is using the latest security tech. Our ssl checker online helps you track this date so your site never goes "dark" or shows scary warnings.

Common Problem: Mixed Content

Sometimes you have an SSL, but the padlock is still broken. This usually happens because you are loading images or scripts using old HTTP links. Fixing these links will bring back your secure status!

Frequently Asked Questions

Is Let's Encrypt a real SSL provider?

Yes! Let's Encrypt is a trusted authority used by millions of websites (including big ones). It provides free certificates that are just as safe as expensive ones.

Does SSL make my site faster?

Actually, yes! Modern web technologies like HTTP/2 and HTTP/3 require SSL to work. These technologies make your website load much faster than the old way.

Is this tool free on AirOI Checker?

100% Free! We want to help everyone make the internet a safer place. You can check any domain as many times as you want.