Types of File Extensions

.DAT File

A file that uses the .DAT extension. It is widely used for a variety of data content.

.WMV File

A file with the WMV file extension is a Windows Media Video file, compressed with one or more of Microsoft's video compression formats. WMV files use Microsoft's Advanced Systems Format (ASF) container format and are therefore very similar to ASF files, which is another file format developed by Microsoft

.DOC File

In computing, DOC or doc (an abbreviation of 'document') is a filename extension for word processing documents, most commonly in the proprietary Microsoft Word Binary File Format.

.TORRENT File

In the BitTorrent file distribution system, a torrent file is a computer file that contains metadata about files and folders to be distributed, and usually also a list of the network locations of trackers, which are computers that help participants in the system find each other and form efficient distribution groups

.TMP File

In the days of limited main memory, temporary files were the only way to store large amounts of interim data that the application was generating. Today, main memory is often used instead. Temporary files typically have a .TMP or .TEMP file extension, but any naming convention might be used.

.BUP File

files are exact copies of IFO files, supplied to help in case of corruption. Video players may not allow DVD navigation when IFO or BUP files are absent. Images, video and audio used in DVD menus are stored in VOB files.

.DLL File

A dynamic link library (DLL) is a collection of small programs, any of which can be called when needed by a larger program that is running in the computer.

.BIN File

A binary file is computer-readable but not human-readable. All executable programs are stored in binary files, as are most numeric data files. In contrast, text files are stored in a form (usually ASCII) that is human-readable. What is a Binary File? Web

.XPI File

An abbreviation for Cross-Platform Install (or XPInstall), a file with the XPI file extension (pronounced "zippy") is a Mozilla/Firefox Browser Extension Archive file used to extend the functionality of Mozilla products like Firefox, SeaMonkey, and Thunderbird.

.FLV File

The audio and video data within FLV files are encoded in the same manner as they are within SWF files. The F4V file format is based on the ISO base media file format and is starting with Flash Player 9 update 3.

.DMG File

The file format used in the Mac for distributing software. ... When the DMG file icon is double clicked, the virtual drive is "mounted" on the desktop. The DMG format harks back to the days when the Mac was a floppy-only machine.

.THM File

are THuMbnails that are automatically generated alongside certain larger photo and video file types, such as Canon's RAW (.CRW) and movies (.AVI)

.MP4 File

is a digital multimedia container format most commonly used to store video and audio, but can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet.

.PPS File

is a file extension for a slide show presentation file format used by Microsoft Power Point, a presentation software commonly used for office and educational slide shows. All text images sound and video used in the presentation are contained in the file.

.XLS File

is a file extension for a spreadsheet file format created by Microsoft for use with Microsoft Excel. XLS stands for eXceL Spreadsheet. Microsoft Excel files use a proprietary format for storing Microsoft Excel documents. This file format is known as the Binary Interchange File Format (BIFF).

.M4A File

is a file extension for an audio file encoded with advanced audio coding (AAC) which is a lossy compression. M4A was generally intended as the successor to MP3, which had not been originally designed for audio only but was layer III in an MPEG 1 or 2 video files.

.RAR File

is a form of compressed archive which is mainly used on Windows based PCs. It is one of the most popular ways of compressing data, and it provides both archiving and compression, which means you can have multiple files that have been reduced in size inside a single RAR file.

.3GP File

is a multimedia container format defined by the Third Generation Partnership Project (3GPP) for 3G UMTS multimedia services. It is used on 3G mobile phones but can also be played on some 2G and 4G phones.

.PDF File

is also an abbreviation for the Netware Printer Definition File. PDF (Portable Document Format) is a file format that has captured all the elements of a printed document as an electronic image that you can view, navigate, print, or forward to someone else.

.VOB File

is the container format in DVD-Video media. VOB can contain digital video, digital audio, subtitles, DVD menus and navigation contents multiplexed together into a stream form. Files in VOB format may be encrypted.