File extension
file extension

The file extension contains a lot of important information for machines (by which we mean computer software as well as system and hardware platforms supporting them). This is the information about what type of data is encoded in a file with the specific extension.

For example: Extensions *.COM, *.BAT or *.EXE inform Windows system in a computer that it contains commands that are to be performed (these are executable files). In Linux-based systems a similar message will be presented by the extension *.SH. In addition to the executable files, in computer systems there are a number of file extensions that explicitly tell the system what software should be used to support them. These files are generally divided into several categories among which the most important are: text files, graphic files, audio files, and files containing multimedia data.

File extension The full name of the file
.TIF Aldus Tagged Image File Format (TIFF) Bitmap Image
.FLV Flash Video Format
.H C/C++ Header Format
.DTD Document Type Definition Format
.PCT Picture Format
.CGI Common Gateway Interface Script Format
.XLSX Microsoft Excel 2007, Excel 2010 And Excel 2013 Open XML Workbook Format
Search for the file extension

Just type in the search box the extension you are looking for (e.g.: APK or DJVU) - without any additional information, and you will be redirected to an appropriate site with the information about the file. (If only the file you're looking for is in our database)

Find the converter
E.g. DOC
E.g. PDF

Enter the source format, output format or fill in both fields. We will display a list of possible conversions or a list of applications to perform file conversion.

I cannot see the file extensions

By default in all Windows systems the file extensions are OFF . To see the extension of all the files, you should follow the instructions below.

  • In the Windows Explorer window, select the "Organize" (in older versions of Windows, select the "Tools" ).
  • Select "Folder and Search Options" .
  • Go to "View" .
  • The last step is to uncheck the "Hide extensions of the known file types" and then press the OK button