What Are the Most Common File Types and File Extensions? (2024)

There are hundreds of different file extensions and file types used with computers, and you can find a complete list on our computer files and file extensions page. However, it would be impossible for most people to memorize all file extensions and their associated programs. The lists below contain the most common file extensions, broken into categories by type of files.

Audio file formats by file extensions

There are several audio file formats, standards, and file extensions used today. Below lists the most common audio file extensions.

• .aif - AIF audio file
• .cda - CD (compact disc) audio track file
• .mid or .midi - MIDI (musical instrument digital interface) audio file.
• .mp3 - MP3 audio file
• .mpa - MPEG-2 audio file
• .ogg - Ogg Vorbis audio file
• .wav - WAV file
• .wma - WMA (Windows Media Audio) audio file
• .wpl - Windows Media Player playlist

Compressed file extensions

Most computer users are familiar with the .zip compressed files, but there are other types of compressed files. Below lists the most common compressed file extensions.

• .7z - 7-Zip compressed file
• .arj - ARJ compressed file
• .deb - Debian software package file
• .pkg - Package file
• .rar - RAR (Roshal ARchive) file
• .rpm - Red Hat Package Manager
• .tar.gz - Tarball compressed file
• .z - Z compressed file
• .zip - Zip compressed file

Disc and media file extensions

When making an image of a disc or other media, all of the contained files are saved to an image file. Below are the most common disc image file extensions.

• .bin - Binary disc image
• .dmg - macOS disk image
• .iso - ISO disc image
• .toast - Toast disc image
• .vcd - Virtual CD

Data and database file extensions

A data file could be any file, but for this list, we've listed the most common data files that relate to data used for a database, errors, information, importing, and exporting.

• .csv - Comma separated value file
• .dat - Data file
• .db or .dbf - Database file
• .log - Log file
• .mdb - Microsoft Access database file
• .sav - Save file (e.g., game save file)
• .sql - SQL database file
• .tar - Linux / Unix tarball file archive
• .xml - XML (extensible markup language) file

E-mail file extensions

Below lists the most common file extensions for e-mail and related files.

• .email - Outlook Express e-mail message file.
• .eml - E-mail message file from multiple e-mail clients, including Gmail.
• .emlx - Apple Mail e-mail file.
• .msg - Microsoft Outlook e-mail message file.
• .oft - Microsoft Outlook e-mail template file.
• .ost - Microsoft Outlook offline e-mail storage file.
• .pst - Microsoft Outlook e-mail storage file.
• .vcf - E-mail contact file.

Executable file extensions

The most common executable file are files ending with the .exe file extension. However, other files can also be run by themselves or with the aid of an interpreter.

• .apk - Android package file
• .bat - Batch file
• .bin - Binary file
• .cgi or .pl - Perl script file
• .com - MS-DOS command file
• .exe - Executable file
• .gadget - Windows gadget
• .jar - Java Archive file
• .msi - Windows installer package
• .py - Python file
• .wsf - Windows Script File

Font file extensions

Below are the most common file extensions used with fonts.

• .fnt - Windows font file
• .fon - Generic font file
• .otf - Open type font file
• .ttf - TrueType font file

Image file formats by file extension

There are many different image types and image file extensions that can be used when creating and saving images on the computer. Below lists the most common image file extensions.

• .ai - Adobe Illustrator file
• .bmp - Bitmap image
• .gif - GIF (graphics interchange format) image
• .ico - Icon file
• .jpeg or .jpg - JPEG (Joint Photographic Experts Group) image
• .png - PNG (portable network graphics) image
• .ps - PostScript file
• .psd - PSD (Photoshop document) image
• .svg - Scalable Vector Graphics file
• .tif or .tiff - TIFF (tagged image file format) image
• .webp - WebP image.

Internet-related file extensions

The Internet is the most used resource on the computer and because web servers supply the files, there are many different file extensions utilized. Below are a list of the most common file extensions on the web.

• .asp and .aspx - Active Server Page file
• .cer - Internet security certificate
• .cfm - ColdFusion Markup file
• .cgi or .pl - Perl script file
• .css - Cascading Style Sheet file
• .htm and .html - HTML (hypertext markup language) file
• .js - JavaScript file
• .jsp - Java Server Page file
• .part - Partially downloaded file
• .php - PHP (PHP: Hypertext Preprocessor) file
• .py - Python file
• .rss - RSS file
• .xhtml - XHTML (extensible hypertext markup language) file

Presentation file formats by file extension

Today, there are a few programs that can create a presentation. Below lists the most common file extensions associated with presentation programs.

• .key - Keynote presentation
• .odp - OpenOffice Impress presentation file
• .pps - PowerPoint slide show
• .ppt - PowerPoint presentation
• .pptx - PowerPoint Open XML presentation

Programming files by file extensions

Many file extensions are used for programs before they are compiled or used as scripts. Below lists the most common file extensions associated with programming.

• .c - C and C++ source code file
• .cgi and .pl - Perl script file.
• .class - Java class file
• .cpp - C++ source code file
• .cs - Visual C# source code file
• .h - C, C++, and Objective-C header file
• .java - Java Source code file
• .php - PHP script file.
• .py - Python script file.
• .sh - Bash shell script
• .swift - Swift source code file
• .vb - Visual Basic file

Spreadsheet file formats by file extension

Below are the most common file extensions used to save spreadsheet files to a computer.

• .ods - OpenOffice Calc spreadsheet file
• .xls - Microsoft Excel file
• .xlsm - Microsoft Excel file with macros
• .xlsx - Microsoft Excel Open XML spreadsheet file

System related file formats and file extensions

Like all other programs, your operating system uses files and has file extensions that are more common than others. Below lists the most common file extensions used on operating systems.

• .bak - Backup file
• .cab - Windows Cabinet file
• .cfg - Configuration file
• .cpl - Windows Control panel file
• .cur - Windows cursor file
• .dll - DLL (dynamic-link library) file
• .dmp - Dump file
• .drv - Device driver file
• .icns - macOS icon resource file
• .ico - Icon file
• .ini - Initialization file
• .lnk - Windows shortcut file
• .msi - Windows installer package
• .sys - Windows system file
• .tmp - Temporary file

Video file formats by file extension

Today, several file types are associated with video files to add different types of compression, compatibility, and DRM (digital rights management) to video files. Below lists the most commonly found video file extensions.

• .3g2 - 3GPP2 multimedia file
• .3gp - 3GPP multimedia file
• .avi - AVI (Audio Video Interleave) file
• .flv - Adobe Flash file
• .h264 - H.264 video file
• .m4v - Apple MP4 video file
• .mkv - Matroska Multimedia Container
• .mov - Apple QuickTime movie file
• .mp4 - MPEG4 video file
• .mpg or .mpeg - MPEG (Moving Picture Experts Group) video file
• .rm - RealMedia file
• .swf - Shockwave flash file
• .vob - DVD Video Object
• .webm - WebM video file.
• .wmv - Windows Media Video file

Word processor and text file formats by file extension

Creating text files and using a word processor is one of the most common tasks on a computer. Below is the most common file extensions used with text files and documents.

• .doc and .docx - Microsoft Word file
• .odt - OpenOffice Writer document file
• .pdf - PDF (Portable Document Format) file
• .rtf - Rich Text Format
• .tex - A LaTeX document file
• .txt - Plain text file
• .wpd - WordPerfect document