DER File

A file with the .DER extension is a file known as DER encoded internet security certificate. It belongs to the Web Files category. This format is associated with N/A.

The reliable way to open a .DER file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.

This page lists 6 programs that open .DER files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.