Arrow Icon 1 Enter here the file extension
you cannot open
Arrow Icon 2 You'll see a list of programs
that support this file

Do you have a problem opening an unknown file?

We have a list of programs that will help you solve your problem

What exactly are
file extensions?

The file extension is usually defined as a short sequence of characters placed after the last dot in the filename.

It most often consists of 3 or 4 characters. Thanks to the file extension, the computer that supports a particular file is able to recognize the format in which the data is stored. This in turn results in that the machine can display the data in a manner that can be "understood" by a man.

Popular
overall

1 normal icon .pkpass
2 normal icon .nomedia
3 normal icon .crypt
4 normal icon .opus
5 normal icon .ccc

Popular
this week

1 up icon .opus
2 up icon .pkpass
3 up icon .crypt
4 up icon .nomedia
5 up icon .m3u8

Help with downloading
the software

In addition to the list of applications that support specific file extensions, you can also find on File-Extension.org suggested locations from where you can safely download the necessary software. Most often they are the websites of software manufacturers.

Help in converting
your file

If your goal is to convert the file to another format, you need to find an application that can perform such an operation. Find in our database a file format you want to convert and see what the possibilities are.

Useful
information

Popular file formats have detailed descriptions to identify the specific file extension. All extensions have information about theirs manufacturer, file category, as well as popularity.

Select the first letter of the file extension you are looking for