File extension or filename suffix is usually three, four or more characters at the end of computer file names divided by a dot.
File extensions are useful to computer programs and operating systems like Windows or macOS (OS X), and basically telling them, what kind of data and file type they are working with and what associated program opens the file.
File-extensions.org library contains thousands of file extensions and the database is still growing.
A large number of file type entries have detailed descriptions, including their current use and the list of programs that can open, view, edit, convert or play unknown file you search for.
Latest articles
Check out the recently published articles related to file extensions, tutorials or software tips.
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Begin your search by entering the source and target file type specified by their file extensions. For example simply try flac to mp3.
File extension of the day
Random daily pick from File-Extensions.org's database.
.jpg-large - Twitter JPEG picture
For an overview of common file types,
visit the common file extensions page, which includes a list of the most important computer file formats you should know.
Popular file extensions
List of the most visited file extension records. Click on the link below for more details and software associations.
file extension apk - Google Android application package
file extension rar - WinRAR RAR compressed archive
file extension mp4 - MPEG-4 video file format
file extension docx - Microsoft Word Open XML document
file extension pdf - Adobe Portable document format
file extension xlsx - Microsoft Excel Open XML workbook and spreadsheet
file extension epub - Open Publication structure e-book
file extension jpg - JPEG bitmap image format
file extension oxps - Microsoft OpenXPS document
file extension part - Partial download
file extension mp3 - Compressed audio and music file, mp3 songs or ringtones
file extension dll - Dynamic Link Library
file extension dwg - AutoCAD drawing
file extension cdr - CorelDRAW vector or bitmap graphics
file extension replay - Rocket League game replay
Recently updated file extensions
The file extension database is maintained and improved on daily basis. Here you can check last updated entries.
file extension wgi - WildGame Innovations flexi video
file extension ufdr - UFED Physical Analyzer report package
file extension timestamp - Timestamp data
file extension sit - StuffIt archive format
file extension pi2 - Portrait Innovations high resolution image
file extension 123 - PCB123 circuit board design
file extension rec - Recorded data
file extension pcap - Captured packets
file extension jpg_128x160 - Android picture image
file extension skf - Autodesk AutoSKETCH thumbnail
file extension paf - Personal Ancestral File
file extension 123 - Lotus 1-2-3 spreadsheet
file extension vtt - WebVTT subtitle format
file extension gslides - Link to Google Slides web application presentation
file extension vtt - VisionTools Pro-e project
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