How To Find Out Information About Unknown File Extension and How To Open Such a File
You might have come across files on the internet or attachments you received in your mail with unknown file extension and unaware of which software to use to open the file.File Extension of a file is the suffix after the file name [ for Example - install.txt here .txt is the file extension which describes what sort of data is present in the file.]

FileInfo.net is a searchable database of file extensions, which gives the detailed information about the file format, a description of the file, and the programs that can open the file. Programs for opening the files are listed for Macintosh, Windows, and Linux platforms.You can search for a specific file extension or browse through the categories or browse alphabetically.
On searching for a file format, the results show the list of programs that could have association with the file format and different applications that can be used to open the file.For Ex. when I searched for MDF file format, here’s the result.

The advanced search lets users search information about file formats based on File Type, File Description, Programs or Company name. If you are a Firefox user you can install the FileInfo Addon for Firefox to find out the application needed to open any file.If you are a Mac User there’s widget that you can use.







