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What is That File? – Introducing File Extensions

by terhunetech on March 18, 2011

In an effort to become “user-friendly,” Windows (and maybe another working systems) hides probably the most essential component of a file title from new computer users: the extension. Okay – we’re assuming the reasoning behind hiding extensions is really a “user-friendly” 1 simply because we just can’t arrive up with every other cause for hiding them. No harm could actually arrive from seeing an extension, but plenty could be learned from it. Thankfully you have this article to guide you via a few of the most common extensions that you will run into.

But prior to you are able to see file extensions, you should turn them on. From Windows Explorer, click on the “Tools” menu, and choose “File Options.” Click the “View” tab and then uncheck the box subsequent to “Hide file extensions for recognized file types.” Click on “OK” and you will discover the files in Windows Explorer show a dot and group of three letters after their names. That dot and group of three letters is known as an “extension,” and also the extension explains what sort of file it’s.

A file might be a plain text file, an picture, a sound, a video clip, or program. But with out seeing the extension, you wouldn’t know it unless you double-clicked on it. The subsequent checklist defines some of the most typical extensions that you will discover on your computer.

.au – This extension indicates a sound file. Most sound players will load up and play this type of file.

.artwork – This extension indicates an picture file that was compressed with AOL (America Online) technology. Each Web Explorer and also the AOL service software program can display this kind of file, however in the event you do not have AOL installed in your system, Web Explorer will show it.

.avi – This extension signifies a video file playable by most multimedia viewers including Microsoft’s Media Player.

.bmp – This extension signifies an additional image file that might have originated from Windows Paint program.

.dll – This extension signifies a Dynamic Link Library which might include extra programming code for software. Many various applications often share Dynamic Hyperlink Libraries and you’ll discover a bunch of them within the Windows/System directory (but do not ever delete them)!

.exe – This extension indicates a program or an application like Microsoft Phrase, Web Explorer, or Outlook Express. Use intense caution when downloading .exe files from the web because malicious programmers prefer to hide viruses in these types of files.

.gif – This extension signifies another image file and it stands for “Graphics Interchange Format.” .Gif files are often smaller than .bmp files (described earlier) and they’re generally found on Web web pages.

.jpg – This extension indicates yet another picture file and it stands for “Joint Photographers Specialists Group.” Like the .gif file, it’s commonly found on Web internet pages, nevertheless it is a lot smaller sized than both the .gif picture and the .bmp image.

.mid – This extension indicates a sound file created having a Musical Instrument Digital Interface. Windows Media Player will open and run these files, however they do not sound like normal .wav or .mp3 files (described later). .Mid files are designed to product artificial sounds utilizing a computer’s sound card.

.mp3 – This extension indicates a sound file that authentically reproduces voice and/or music. Windows Media Player will open and run this type of file.

.scr – This extension indicates a screen saver file.

.sit – This extension signifies a Macintosh archive StuffIt file. They will not open on a Windows system with out a special utility.

.ttf – This extension indicates a font particularly designed for use on the Windows system. It stands for “True Kind Font.”

.txt – This extension indicates a plain text file that may be opened with Notepad.

.wav – This extension indicates a sound file that such as the .mp3 file, can be opened with Windows Media Player or Windows Sound Recorder. .Wav files are a lot larger than .mp3 files.

.zip – This extension signifies a Windows archive WinZip file. They’ll not open on a Macintosh system without a special utility.

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