In Safari 18.3 and earlier on macOS, it’s been possible to access details about SSL certificates used by the websites being visited by using the following process:

1. Launch Safari if needed.

2. Click the address bar

3. Click the padlock icon on the left side of the address.

4. Click the View Certificate button.

You should see a window with the SSL certificate details.

In Safari 18.4 and later, this process has changed. The details are described in the release notes for Safari 18.4:

Added the ability to view certificate detail from Page Menu > more > Connection Security Details on iOS, iPadOS, and in visionOS, or Safari > Connection Security Details… on macOS. (139300381)

For more details, please see below the jump.

For Safari 18.4 and later for macOS, the process now looks like this:

1. Launch Safari if needed.

2. Click the Safari menu.

3. Select Connection Security Details….

4. Click the View Certificate button.

You should see a window with the SSL certificate details.

For Safari 18.4 and later for iOS, the process now looks like this:

1. Launch Safari if needed.

2. Click the Reader icon.

3. Click on the ellipsis menu.

4. Click on Connection Security Details.

You should see a window with the SSL certificate details.