62 votes
CER File - What is a .cer file and how do I open it?
Learn about .CER files and view a list of programs that open them.
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Overview
What is a CER file? A CER file is a security file provided by a third-party Certificate Authority, such as VeriSign or Thawte, that verifies the authenticity of a website. It is installed on a web server to establish the validity of a particular website hosted on the server.
More Information You can view a website's certificate in a web browser by clicking the lock icon when accessing a secure site (secure sites use SSL encryption as seen by the https:// prefix in the URL ). In each of the major web browsers, such as Google Chrome, Microsoft Edge, and Mozilla Firefox, the lock icon is located on the left side of the address bar .
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Popularity3.4 | 62 Votes
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.CER File Extension
Internet Security Certificate
| Developer | N/A |
| Popularity |
3.4 | 62 Votes |
What is a CER file?
A CER file is a security file provided by a third-party Certificate Authority, such as VeriSign or Thawte, that verifies the authenticity of a website. It is installed on a web server to establish the validity of a particular website hosted on the server.
More Information
You can view a website's certificate in a web browser by clicking the lock icon when accessing a secure site (secure sites use SSL encryption as seen by the https:// prefix in the URL ). In each of the major web browsers, such as Google Chrome, Microsoft Edge, and Mozilla Firefox, the lock icon is located on the left side of the address bar .
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Programs that open or reference CER files
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Platform
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Windows
Microsoft Edge
Free
Google Chrome
Free
Mozilla Firefox
Free
Other web browser
Adobe Acrobat Reader DC
Free
Adobe Acrobat DC
Free Trial
Mac
Apple Safari
Included with OS
Google Chrome
Free
Mozilla Firefox
Free
Microsoft Edge
Free
Other web browser
Adobe Acrobat Reader DC
Free
Adobe Acrobat DC
Free Trial
Apple Keychain Access
Included with OS
Linux
Mozilla Firefox
Free
Adobe Acrobat Reader DC
Free
Category: Web Files
Updated: December 21, 2018