File extensions of Text files and editors:
.doc and .docx - Microsoft Word file(MS word): The DOCX and DOC file extensions are used for Microsoft Word documents, which is a part of the Microsoft Office Suite. DOCX/DOC files are used to store word processing data.
DOCX file format was introduced with MS Office 2007. Microsoft Word 2007 and later versions of MS Word use DOCX as the default file format when creating a new document. MS Word and its later versions also provide support for editing of older/legacy file format DOC.
DOC is the default file format used in MS Office 97-2003. Microsoft Word 97-2003 uses DOC as the default file format when creating a new document. DOCX files can be edited in MS Office 97-2003 by using an add-in.
.odt - OpenOffice Writer document file
.pdf - PDF file
.rtf - Rich Text Format(wordpad)
.tex - A LaTeX document file
.txt - Plain text file(notepad)
.wpd - WordPerfect document
.ppt and .pptx – presentation file(MS power point)
.xls and xlsx – spredsheet/excel file(MS excel)
Programming file formats and file extensions:
.c - C source code 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
Audio file formats and file extensions:
.aif - AIF audio file.cda - CD audio track file
.mid or .midi - MIDI audio file.
.mp3 - MP3 audio file
.mpa - MPEG-2 audio file
.ogg - Ogg Vorbis audio file
.wav - WAV file
.wma - WMA audio file
.wpl - Windows Media Player playlist
Video file formats and file extensions:
.3g2 - 3GPP2 multimedia file.3gp - 3GPP multimedia file
.avi - AVI 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 video file
.rm - RealMedia file
.swf - Shockwave flash file
.vob - DVD Video Object
.wmv - Windows Media Video file
Image file formats and file extensions:
.ai - Adobe Illustrator file.bmp - Bitmap image
.gif - GIF image
.ico - Icon file
.jpeg or .jpg - JPEG image
.png - PNG image
.ps - PostScript file
.psd - PSD image
.svg - Scalable Vector Graphics file
.tif or .tiff - TIFF image
Compressed file formats and file extensions:
.7z - 7-Zip compressed file.arj - ARJ compressed file
.deb - Debian software package file
.pkg - Package file
.rar - RAR file
.rpm - Red Hat Package Manager
.tar.gz - Tarball compressed file
.z - Z compressed file
.zip - Zip compressed file
Disc file format and file extensions:
.bin - Binary disc image.dmg - macOS X disk image
.iso - ISO disc image
.toast - Toast disc image
.vcd - Virtual CD
Data file extensions
.csv - Comma separated value file
.dat - Data file
.db or .dbf - Database file
.log - Log file
.mdb - Microsoft Access database file
.sav - Save file ( game save file)
.sql - SQL database file
Executable file formats and file extensions:
.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 formats and file extensions:
.fnt - Windows font file.fon - Generic font file
.otf - Open type font file
.ttf - TrueType font file
WWW related file formats and file extensions:
.asp and .aspx - Active Server Page file.cer - Internet security certificate
.cfm - ColdFusion Markup file
.css - Cascading Style Sheet file
.htm and .html - HTML file
.js - JavaScript file
.jsp - Java Server Page file
.part - Partially downloaded file
.rss - RSS file
.xhtml - XHTML file
System related file formats and file extensions:
.bak - Backup file.cab - Windows Cabinet file
.cfg - Configuration file
.cpl - Windows Control panel file
.cur - Windows cursor file
.dll - DLL file
.dmp - Dump file
.drv - Device driver file
.ico - Icon file
.ini - Initialization file
.lnk - Windows shortcut file
.msi - Windows installer package
.sys - Windows system file
.tmp - Temporary file