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.crt

File Type Generic IconSecurity Certificate
File Format Standard
Usage Open manually; may be referenced by an application
Popularity ★ ★ ★ ★ ☆  Common
Description

Certificate used by secure websites (beginning with "https://") to verify their authenticity; distributed by companies such as Verisign and Thawte.

Certificate files are automatically recognized by Web browsers when a user visits a secure site. The information stored in the certificate can be viewed by clicking the lock icon within the browser window.

Open With
Windows

IconMicrosoft Edge

IconGoogle Chrome

IconMozilla Firefox

macOS

IconApple Safari

IconGoogle Chrome

IconMozilla Firefox

Unix

IconGoogle Chrome

IconMozilla Firefox

IconOpenSSL

Published 2007
Information from the PC File Extensions Reference
https://pc.net/extensions/crt
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