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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
.KEYCHAIN file extension Mac OS X Keychain File Rate 5
.ZIP file extension Zipped File Rate 5
.ACCDB file extension Access 2007 Database File Rate 5
.DNG file extension Digital Negative Image File Rate 5
.PPS file extension PowerPoint Slide Show Rate 5
.INI file extension Windows Initialization File Rate 5
.MSG file extension Outlook Mail Message Rate 5
.EPS file extension Encapsulated PostScript File Rate 5
.ZIPX file extension Extended Zip File Rate 5
.7Z file extension 7-Zip Compressed File Rate 5