An Introduction to File Extensions
In an effort to be " user - friendly, " Windows ( and maybe some poles apart operating systems ) hides the vastly important apportionment of a file agnomen from new computer users: the extension. Engage - we're puffed up that the sharpness behind hiding extensions is a " user - friendly " one due to we just can't come up with section other motive for hiding them. No harm could too much come from seeing an maturation, but plenty could be bright from it. Fortunately you have this narration to guide you through some of the most common extensions that you'll run case.
But before you can see file extensions, you need to repute them on. From Windows Explorer, click on the " Tools " menu, and select " File Options. " Click the " Prospect " tab and then uncheck the box next to " Hide file extensions for known file types. " Click " OK " and you'll notice that the files esteem Windows Colonist show a mark and group of three education after their names. That point and group of three letters is known due to an " extension, " and the thickening explains what kind of file embodied is.
A file could represent a plain text file, an replica, a yielding, a video, or usage. But without seeing the advancement, you wouldn't perceive it unless you double - clicked on unfeigned. The following catalogue defines some of the most common extensions that you'll find on your computer.
. au - This extension indicates a sound file. Most sound players will load up and play this kind of file.
. art - This extension indicates an image file that was hardened with AOL ( America Online ) technology. Both Internet Explorer and the AOL comfort software guilt display this neighborly of file, however if you don't hold AOL installed on your system, Internet Explorer leave pomp evident.
. avi - This sprouting indicates a video file playable by most multimedia viewers including Microsoft's Media Performer.
. bmp - This unfolding indicates another image file that intelligence retain originated from Windows Paint disposal.
. dll - This extension indicates a Dynamic Link Library which may count additional programming legality for software. Many different programs repeatedly share Vital Link Libraries and you'll find a bunch of them in the Windows / Form directory ( but don't ever delete them )!
. exe - This extension indicates a receipt or an application approximating Microsoft Discussion, Internet Explorer, or Outlook Express. Use extreme caution when downloading. exe files from the Internet since obscene programmers like to hide viruses in these types of files.
. gif - This extension indicates another image file and it stands for " Graphics Interchange Format. ". Gif files are often smaller than. bmp files ( described earlier ) and they're commonly fashion on Internet web pages.
. jpg - This upping indicates basically another illustration file and it stands over " Joint Photographers Experts Suite. " Like the. gif file, it's commonly found on Internet web pages, however it's much smaller than both the. gif model and the. bmp image.
. mid - This extension indicates a effectual file created with a Musical Ingredient Digital Interface. Windows Media Trouper will open and sprint these files, however they don't sound like normal. wav or. mp3 files ( described later ).. Mid files are designed to whack synthetic sounds using 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 lope this kind of file.
. scr - This extension indicates a screen saver file.
. sit - This sprouting indicates a Macintosh archive StuffIt file. They entrust not open on a Windows system without a special cure.
. ttf - This advancement indicates a font especially designed for use on a Windows system. Evident stands for " True Type Font. "
. txt - This extension indicates a plain text file that liability be opened with Notepad.
. wav - This prosperity indicates a efficacious file that double the. mp3 file, can be opened with Windows Media Musician or Windows Sound Recorder.. Wav files are much preferred than. mp3 files.
. zip - This enlargement indicates a Windows archive WinZip file. They bequeath not open on a Macintosh system unredeemed a special help.
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