Try Oh Dear! without creating an account.

You can test all of the checks we perform as a one-off scan. See the results immediately for any website you'd like.

Certificate health check

We can quickly scan your domain and verify if your SSL/TLS certificates are good: the expiration date, the chain of trust, trusted root anchors, SHA1 hashes, ...

Website availability check

Let us check the availability of your website from endpoints all around the world.

Want to test your website from Sydney, Paris, Bangalore, Dallas, Frankfurt or more locations? Give it a try.

Broken links check

We can crawl your entire site and create a list of all links that are broken.

This includes both internal links (on your own domain) as well as external links (sites you link to).

Public check coming soon!

Mixed content check

Loading HTTP content on an HTTPS site is blocked in browsers as it poses a security risk.

We will crawl your entire site & report all pages that contain mixed content.

Public check coming soon!
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