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Handy file extensions which you should not forget if you are a computer user.

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File extension awareness can prevent you from downloading potentially dangerous files. It will also let you know which application is needed to open them. Read this article and it will help you in your day to day work.

File extensions are like surnames ( In real life scenario ) …. The name can be chosen by you during the time of saving the file. The extension is given to it by the application. The list below has the most frequently used file extension names. In reality there are atleast a thousand file extensions existing as of today. So go through this list slowly.

SAMPLE : filename.extension

1. Text files – .txt
2. Documents / Word file – .doc
3. Microsoft Excel – .xls
4. Microsoft Access – .mdb
5. Microsoft Power Point – .ppt

Office 2007 has new file extensions. The 2007 Microsoft Office system introduces a new file format that is based on XML. It is called Open XML Formats. Word

XML file type Extension
Document .docx
Macro-enabled document .docm
Template .dotx
Macro-enabled template .dotm

Word supports a DOCX format (macro-free document) and a DOCM format (document that allows macros). Administrators can control the use of these formats by Group Policy.

Excel

XML file type Extension
Workbook .xlsx
Macro-enabled workbook .xlsm
Template .xltx
Macro-enabled template .xltm
Non-XML binary workbook .xlsb
Macro-enabled add-in .xlam

PowerPoint

XML file type Extension
Presentation .pptx
Macro-enabled presentation .pptm
Template .potx
Macro-enabled template .potm
Macro-enabled add-in .ppam
Show .ppsx
Macro-enabled show .ppsm
Slide .sldx
Macro-enabled slide .sldm
Office theme .thmx

Compatibilty pack which is available from microsoft site can be used for opening/editing office 2007 files with older versions. Here is the link

6. Images – .jpeg, .gif, .png
7. Audio – .wav, .cda, .mp3 ( and other versions ), .wma etc
8. Video – .mpeg, avi(audio video interleave), .dat(VCD video file), DivX (DivX encoded movie), .m(real media)
9. Installers/ Executable – .exe
10. Corel Draw – .cdr
11. True type fonts ( Windows ) – .ttf
12. Webpage – .htm, .html, .xhtml
13. Programmed webpage – .php, .aspx, .cfm
14. Microsoft ebook reader – .lit
15. Rich Text File – .rtf
16. Photoshop – .psd
17. Flash – .flv, .fla
18. Zipped – .zip, .rar
19. Icons ( Windows ) – .ico
20. Outlook Express email – .dbx

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