Internet Security Certificate
Sometimes you just need to see what is in the CER file, without having to perform more complicated operations. In this case, it is enough that you use the so-called CER Viewer. Such a program allows us only to display the contents of the CER file. To view the content of the CER file you can use several options:
CER viewer did not handle your file? Take advantage of other options For starters, we suggest installing software that supports CER files You can try to open your CER file with one of these applications. By choosing the option to install dedicated software, you will also be able to e.g. edit the CER file and sometimes even convert the CER file.
Note, however, that this solution requires you to download and install the software dedicated to handling the CER file on your device. Unfortunately, it is not possible to see the CER file online in this case. Here you will need more time to use this solution, but you will also have more options. Below you will find a list of example applications that are dedicated to working with the CER file - for the full list go to CER File Opener
If you haven't been able to preview the contents of the CER file yet, or you don't want to install any dedicated programming to handle these files, you can try something else. Many file types are simply text files or data archives. If this is the case, you can try to preview the contents of CER file with "Notepad". This does not guarantee success, but in most cases it will allow you to see the contents of the CER file to some extent.
The second way is to use a data archiving program. Open Winrar or Winzip and try to unpack your file. If the file is a data archive, you should see what individual files it consists of. If you don't know what type of CER file is, learn more about CER file extension.
Go to a third-party website and try to find help
Free Online File Viewer Service
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