what are file extensions?
DESCRIPTION
What are File Extensions?. A filename extension (or file type) is a suffix appended to the name of a computer file that indicates the encoding convention (file format) of its contents. The file type follows the ‘dot’ (e.g. .doc, .pdf, etc.) and is usually 3 or 4 characters in length. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: What are File Extensions?](https://reader036.vdocument.in/reader036/viewer/2022082422/56812bc5550346895d900a93/html5/thumbnails/1.jpg)
What are File Extensions?A filename extension (or file type) is a suffix appended to the name of a computer file that indicates the encoding convention (file format) of its contents. The file type follows the ‘dot’ (e.g. .doc, .pdf, etc.) and is usually 3 or 4 characters in length.
A simpler explanation is that a filename extension indicates which software application created the file. Microsoft Operating Systems requires a file to have an extension. Other operating systems (e.g. Linux) do not require a file to have an extension.When you create and save a file, the extension is usually appended to the file automatically.
If you remove the filename extension from a file name, you may corrupt the file and render it unusable.
The following slides list some common filename extensions you may have encountered before:
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Here are some common filename extensions you may have encountered before:
.jpeg Joint Photographic Experts Group
commonly used graphics file typea jpeg will usually take on the icon assigned to that file
extension by the software that created it.
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.mpeg Moving Picture Experts Group
commonly used video file type
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.wav Waveform audio format
commonly used sound file
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.mp3 MPEG-1 Audio Layer 3
commonly used sound file
The compression protocols on this file type make it ideal for fast downloading and playback of music
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.pptPowerPoint Template
MS PowerPoint fileCommonly Used MS Presentation Application
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.xls MS Excel Spreadsheet
![Page 8: What are File Extensions?](https://reader036.vdocument.in/reader036/viewer/2022082422/56812bc5550346895d900a93/html5/thumbnails/8.jpg)
.docMS Word Document
Word Processing(Word 2007 files have a .docx extension)