CER File Extension

File Type

Internet Security Certificate




Web Files





Information about the CER file extension

CER is the extension given to files that are used in 3 operating systems such as: Linux, Mac OS, Windows. Adobe Reader is a very common application as a tool for handling CER files. This is an application developed by Adobe Systems Incorporated. The Adobe Acrobat, Mozilla Firefox, Safari, Microsoft Internet Explorer programs are also compatible with CER files and can be used to open them.

The data in the CER files are saved in the manner characteristic for Web Files. The CER file extension can also be found in 303 in other file types and may not be supported by Adobe Reader or similar programs. The Internet Security Certificate file format and the Adobe Reader program were developed by N/A. Modification or reading of files with the name Internet Security Certificate in many cases is done in the Adobe Reader program.

Choose the right tool

CER File Extension

CER File Tools

What tools are we dealing with?

We present some basic free online tools that work with CER. Through them, you can perform many activities related to CER for free. You can easily convert the file, preview its contents, or open and edit any CER file.

CER File Opener

CER opener is a very popular tool among our users. You will learn a few ways to open your CER file. Opening the CER file is just the beginning. Other file operations can be the next step.

CER File Viewer

The CER Viwer tool helps to preview the contents of a file without the need to install dedicated software. Click on the subpage and use the form to select the file. Then our Tool will show you the contents of the file.

CER File Converter

Try to convert the CER file to a different format if problems arise while working with the CER file. Converting the CER file will give you more options for editing the data in the file.

CER File Editor

If you want to edit the content of CER file, please use CER editor. Sometimes you need to be able to fully edit the contents of the CER file, in which case you may need to install dedicated software. Go to our editor to learn more about editing the CER file.



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