How to find the Firefox Certificate Viewer

Mozilla is set to launch a Certificate Viewer. Find out why and how to open it.
Firefox has always had a certificate viewer, but with the release of Firefox 71, a new certificate viewer will be in place. This new certificate viewer opens in its own tab (instead of a new window) and displays all relevant information for a specific certificate such as validity, fingerprint, public key, information about the issuer, and much more.
Why did Mozilla make the change from opening the certificate viewer in a tab, instead of its own window? Primarily because opening the certificate viewer in its own tab ensures everything displays properly, regardless of the size of the window.
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Why would you want to view a certificate? One reason is to make sure the certificate for the site you are visiting is legit. Or you might be using a certificate for your own site and you want to make sure it’s working properly and displays the correct information. There are a number of reasons to view a site’s certificate.
How to open the Firefox Certificate Viewer
- Go to a site that uses a certificate (such as TechRepublic.com).
- Once the page loads, right-click anywhere and select View Page Info. The Page Info box will open.
- In that new window, click the Security tab and then the View Security button. A new tab will open, displaying all of the information for the site’s certificate.
- You can now close the Page Info box and view all of the information regarding that certificate in the newly-opened tab.
And that’s all there is to locating and using the new Firefox Certificate Viewer. Note: Currently, only the Firefox Nightly build offers the new certificate viewer. If you use the standard release, you’ll have to…
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