Appendix B. Common File Extensions

File Extension

Type of File

.0

File containing information on hard disk compressed with DoubleSpace.

.123

Spreadsheet file in Lotus 123.

.4th

Source file in Forth.

.a

Source file in Macintosh Assembly.

.ad

Screensaver file in After Dark.

.ada

Source file in Ada.

.ai

Vector graphic file in Adobe Illustrator.

.aif

See .aiff.

.aifc

See .aiff.

.aiff

Audio file in the Apple Audio Interchange Format originally used on Apple and Silicon Graphics (SGI) computers.

.ani

  1. Animated cursor file in Microsoft Windows 9x and Windows NT.

  2. Animation file.

.aol

File related to America Online.

.aps

Source file in Microsoft Visual C++.

.arc

Archive file compressed with ARC.

.arj

Archive file compressed with ARJ.

.asc

  1. ASCII text file.

  2. File encrypted with PGP (Pretty ...

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