List of Most Common Computer File Extensions and Their Full form

What is File Extension & How file extensions important?

A file extension is a suffix at the end of a computer file which is helps to operating system to understand the file type, format and characteristics of the file. It is also known as file type extensions or filename extension. Basically the file extension comes after the file name separated by dot (.) symbol. Also for file Filename extensions may be considered a type of metadata

A complete filename includes the name of file with file extension to understand, choose or to indicate the program/application type. for example a file name “Introduction to Library.doc” here the “Introduction to Library” indicates  the file name and .doc indicates the file extension which is readable to machine or to understand this is a document type fie. The file extension usually consist three or four characters, although in rare cases it could be one or two, and it is used as a suffix to the file name.

Following are the list of some of most common File Extensions with their full form

1. .3GP 3GPP Multimedia File
2. .7Z 7-Zip Compressed File
3. .APK Android Package File
4. .APP Mac OS X Application
5. .ASP Active Server Page
6. .ASPX Active Server Page Extended
7. .AVI Audio Video Interleave File
8. .BAK Backup File
9. .BAT DOS Batch File
10. .BMP Bitmap Image File
11. .CFG Configuration File
12. .COM DOS Command File
13. .CSS Cascading Style Sheet
14. .CSV Comma Separated Values File
15. .DAT Data File
16. .DB Database File
17. .DLL Dynamic Link Library
18. .DOC Microsoft Word Document
19. .DOCX MSWord Open XML Document
20. .EPS Encapsulated PostScript
21. .EXE Windows Executable File
22. .FLV Flash Video File
23. .GIF Graphical Interchange Format
24. .HTM Hypertext Markup Language
25. .HTML Hypertext Markup Language
26. .JPG JPEG Image
27. .JS JavaScript File
28. .JSP Java Server Page
29. .M3U Media Playlist File
30. .M4A MPEG-4 Audio File
31. .MDB Microsoft Access Database
32. .MID MIDI File
33. .MOV Apple QuickTime Movie
34. .MP4 MPEG-4 Video File
35. .MPA MPEG-2 Audio File
36. .MPG MPEG Video File RM Real Media File
37. .MSG Outlook Mail Message
38. .PDF Portable Document Format
39. .PHP PHP Source Code File
40. .PNG Portable Network Graphic
41. .PPT PowerPoint Presentation
42. .PPTX PowerPoint Open XML Presentation
43. .PSD Adobe Photoshop Document
44. .RAR WinRAR Compressed Archive
45. .RSS Rich Site Summary
46. .RTF Rich Text Format File
47. .SQL Structured Query Language Structure Data File
48. .SWF Shockwave Flash Movie
49. .SYS Windows System File
50. .TAR Consolidated Unix File Archive
51. .TEX LaTeX Source Document
52. .TIF Tagged Image File
53. .TIFF Tagged Image File Format
54. .TMP Temporary File
55. .TXT Plain Text File
56. .VCD Virtual CD
57. .VOB DVD Video Object File
58. .WAV WAVE Audio File
59. .WMA Windows Media Audio File
60. .WMV Windows Media Video File
61. .XLS Excel Spreadsheet
62. .XLSX Microsoft Excel Open XML Spreadsheet
63. .XML XML File
64. .ZIP Zipped File
65. .ZIPX Extended Zip File

I hope this file extension types list helps you to understand & improve your knowledge on file extensions and their meaning. If you like this list please post or comment on this post in comment box & share your views on comment box. Share this post to other LIS member. Also Suggest topics which required detail information.

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