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Welcome to OpenTheFile.org


OpenTheFile.org offers reliable assistance and professional support in solving problems related to the opening of the unknown files.

Anyone using the information presented on the site can quickly open any unknown file without professional help of the IT specialist.


How to recognize the file format?

Each file name is complemented with a special file extension, the task of which is to inform the user and the operating system about the format in which the data contained in it are saved. To open the file, use a program that supports the format specified by the extension.


The file does not open. I do not know what format it is, what should I do?

File extensions are hidden by the Operating System. To see the extensions of all the files, including the file, which we cannot open, follow the steps listed below:

  • Enter Windows Explorer or click My Computer
  • Go to the Control Panel and then to Folder Options
  • Select the View
  • Find the setting specified as Hide extensions for known file types , then Clear this field.
  • Click OK
But remember that you cannot use this method for files with extensions .exe, .com and .bat

Popular extensions in our site database

File extension File name Popularity
.APP file extension Mac OS X Application Rate 5
.ASX file extension Microsoft ASF Redirector File Rate 5
.BAK file extension Backup File Rate 5
.DBF file extension Database File Rate 5
.DOC# file extension Microsoft Word Document Rate 5
.FLV file extension Flash Video File Rate 5
.MDB file extension Microsoft Access Database Rate 5
.PDF file extension Portable Document Format File Rate 5
.VCF file extension vCard File Rate 5
.WMV file extension Windows Media Video File Rate 5