.DER File Overview

File Extension:	DER
File Type Description:	DER Certificate File
File Type Developer:	Mozilla
Primary Associated Software:	Internet Explorer
Primary Software Developer:	Microsoft Corporation

Open your files with FileViewPro File Viewer

Download File Opener

DER

Optional Offer for FileViewPro by Solvusoft | EULA | Privacy Policy | Terms | Uninstall

Home File Types Web Files DER

What is File Extension DER?

Mozilla developed the DER file extension, also know as a DER Certificate File file, for the Mozilla Firefox software package. Our data shows that DER files are frequently utilized by PC users in China and popular on the Windows 10 platform. In most cases, these users are surfing the internet using the Google Chrome browser.

Associated Developers and Software

	Mozilla Firefox by Mozilla
	Apple Safari by Apple
	Internet Explorer by Microsoft Corporation
	Apple Keychain Access by Apple

Top DER User Languages

Top DER File User Browsers

Desktop Friendly?

Mobile Friendly?

Top User Operating Systems


Windows 10	Windows 11	Windows 6	Windows 8.1

Associated Operating Systems

	Windows
	Mac
	iOS
	Android
	Linux

Other File Types Related to DER Files

Extension	File Type Developer	File Category	File Type Description
.XHT	Open Source	Web Files	XHTML File
.RESX	Microsoft Corporation	Developer Files	.NET Managed Resources File
.RL4	Various Developers	Raster Image Files	Bitmap Image File
.TLD	The Eclipse Foundation	Developer Files	Tag Library Descriptor File
.SHTM	Opera Software	Video Files	HTML Server Side Include File
.PHL	Amazon	eBook Files	Kindle Popular Highlights File
.MDN	Microsoft Corporation	Database Files	Blank Access Database Template
.MPW	Microsoft Corporation	Settings Files	Microsoft Project Workspace File
.HXA	Microsoft Corporation	Settings Files	Microsoft Help Attribute Definition
.CPQ	Compaq	System Files	Compaq OEM Disc Configuration File