There are 4 other file types using
the CER file extension!

cer file icon.cer - Lahey Fortran compilation error message file

cer file icon.cer - Cerius2 data file

cer file icon.cer - Creatacard certificate project file

cer file icon.cer - Sierra Print Artist certificate file

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CER file extension - Internet security certificate

What is cer file? How to open cer files?

The cer file extension is associated with the Internet Security Certificate files. Security certificates are used to Secure Internet server, web site transactions, logins, webmail and connections. They can use SSL encryption.

MIME: application/x-x509-ca-cert, application/pkix-cert

The default software associated to cer file type:

Microsoft Edge icon

Microsoft Corporation logo Microsoft Edge  Microsoft Windows software

Company or developer:
  Microsoft Corporation

Microsoft Edge is web browser introduced in Microsoft Windows 10 operating system. It's fast and built for modern web applications and presentations. It allows users to simple share, reading and discover the Internet.

Microsoft Internet Explorer icon

Microsoft Corporation logo Microsoft Internet Explorer  Microsoft Windows software

Company or developer:
  Microsoft Corporation

Microsoft Internet Explorer is traditionally used as default web browser that comes as part of Microsoft Windows operating system. First released in 1995. Latest version is 11.

Latest Microsoft Windows 10 also contains Internet Explorer, but as default browser is used Microsoft Edge.

Safari icon

Apple, Inc. logo Safari  Apple macOS / Mac OS X software

Company or developer:
  Apple, Inc.

Safari is the default web browser integrated to Apple Mac OS X since version 10.3 "Panther". It is also used in iOS devices like iPads and IPhones.

Help how to open CER files:

Due the variability and uncertainty of this file type group, there is no general information available, about how to open this various data file format. However most files with extension from this group are usually not meant to be opened or viewed directly. If there are associated applications or programs listed below the extension description, you can always try to check their website for additional informations on their forums or other type of customer support.

For general information try to look at:
Identifying unknown file formats

How to convert file with extension CER:

Due the variability and uncertainty of this file type group, there is no general information available, about how to convert this various data file format. However most files with extension from this group are usually not in formats, which can be converted. If there are associated applications or programs listed below the extension description, you can always try to check their website for additional informations on their forums or other type of customer support.

List of recommended software applications associated to the .cer file extension

Recommended software programs are sorted by OS platform (Windows, Mac OS X etc.) and possible program actions
that can be done with the file
: like open cer file, edit cer file, convert cer file, view cer file, play cer file etc. (if exist software for corresponding action in File-Extensions.org's database).

  • Others cer file

Unspecified and all other actions for computer programs working with cer file - Internet security certificate

Click on the software link(s) for more information. Suggested software applications use cer file type for internal purposes and/or also by different way than common edit or open cer file actions.

Microsoft Windows:

Main software associated with cer file by default:
Microsoft Edge small icon Microsoft Edge
Microsoft Internet Explorer small icon Microsoft Internet Explorer
Other suggested software:
Opera browser small icon Opera browser
Firefox small icon Firefox
Google Chrome small icon Google Chrome
Chromium small icon Chromium
SeaMonkey small icon SeaMonkey
Safari for Microsoft Windows small icon Safari for Microsoft Windows

Apple macOS / Mac OS X:

Main software associated with cer file by default:
Safari small icon Safari
Other suggested software:
Opera browser for Mac small icon Opera browser for Mac
Google Chrome for Mac small icon Google Chrome for Mac
Firefox for Mac small icon Firefox for Mac
Chromium for Mac small icon Chromium for Mac

Apple iOS (iPhone, iPad, iPod Touch devices):

Other operating systems or devices:

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CDF file extension

File-Extensions.org > Various data file types

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file extension CERT

 

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