.CRT file extension - Internet security certificate
What is crt file? How to open crt files?
File extension crt is frequently used for Internet security certificates. Server, web site transactions, logins, webmail and connections are usually secured with a SSL Certificate.
One of the most used certificate formats is the X.509v3. The standard known as ITU-T X.509 (formerly CCITT X.509) or ISO/IEC 9594-8, which was first published in 1988 as part of the X.500 Directory recommendations, defines a standard certificate format. The certificate format in the 1988 standard is called the version 1 (v1) format.
MIME types used:
application/x-x509-ca-cert
application/pkix-cert
application/keychain_access
application/x-x509-user-cert
The default software associated to open crt file:
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.
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.
List of software applications associated to the .crt file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open crt file, edit crt file, convert crt file, view crt file, play crt file etc. (if exist software for corresponding action in File-Extensions.org's database).
Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting crt files.
Software that import crt file - Internet security certificate
Programs supporting the exension crt on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for import crt file action.
Microsoft Windows:
Main software associated with crt file by default:
Microsoft Edge
Other suggested software:
Opera browser
Firefox
Google Chrome
Safari for Microsoft Windows
Apple macOS / Mac OS X:
Main software associated with crt file by default:
Safari
Other suggested software:
Opera browser for Mac
Firefox for Mac
Google Chrome for Mac
