What are the Types of File Extensions?

Types of File Extensions
There are many types of files that have different extensions. A file extension is the suffix located at the end of the file name, usually separated from the name by a dot (.)
Next we will group the extensions by file types, classifying them as follows:
Text File Extensions
Identifies plain text files such as .txt and .log and rich text files such as:
.doc | Microsoft Word Document |
.docx | Microsoft Word Open XML Document |
.log | Log File |
.msg | Outlook Mail Message |
.odt | OpenDocument Text Document |
.pages | Pages Document |
.rtf | Rich Text Format File |
.tex | LaTeX Source Document |
.txt | Plain Text File |
.wpd | WordPerfect Document |
.wps | Microsoft Works Word Processor Document |
Graphics File Extensions
They identify the images or graphic figures, they are examples of graphic extensions:
.bmp | Bitmap Image File |
.gif | Graphical Interchange Format File |
.jpg | JPEG Image |
.png | Portable Network Graphic |
.psd | Adobe Photoshop Document |
.tga | Targa Graphic |
.thm | Thumbnail Image File |
Audio File Extensions
They identify the files that contain sound, they are examples:
.aif | Audio Interchange File Format |
.iff | Interchange File Format |
.m3u | Media Playlist File |
.m4a | MPEG-4 Audio File |
.mid | MIDI File |
.mpa | MPEG-2 Audio File |
.out | Real Audio File |
.wav | WAVE Audio File |
.wma | Windows Media Audio File |
Video File Extensions
They identify the videos, are examples:
.avi | Audio Video Interleave File |
.flv | Flash Video File |
.m4v | iTunes Video File |
.mov | Apple QuickTime Movie |
.mp4 | MPEG-4 Video File |
.mpg | MPEG Video File |
.rm | Real Media File |
.swf | Shockwave Flash Movie |
.vob | DVD Video Object File |
.wmv | Windows Media Video File |
Compressed File Extensions
They identify the files that are packed with in a single unit, they are examples:
.7z | 7-Zip Compressed File |
.cbr | Comic Book RAR Archive |
.gz | Gnu Zipped Archive |
.pkg | Mac OS X Installer Package |
.rar | WinRAR Compressed Archive |
.tar.gz | Compressed Tarball File |
.zip | Zipped File |
.zipx | Extended Zip File |