Extension computer programs

CLASS or. JAVA Java files. CVS Canvas. DIF Data Interchange format. DOC or. FM3 Filemaker Pro databases the numbers following represent the version. HTM or. HTML Web page source text. MAC MacPaint. MAP Web page imagemap. MID or. MOV or. MTB or. MTW MiniTab. PDF Acrobat -Portable document format. PPT or. RA RealAudio. WAV Windows sound.

Easy to follow. No jargon. Pictures helped. Didn't match my screen. Incorrect instructions. Too technical. Not enough information. Not enough pictures. Any additional feedback? Submit feedback. Thank you for your feedback! It is possible to show the file extensions if they're hidden.

Click the links below to see how to show file extensions in Windows and macOS:. You can also usually tell what the file type is by looking at the file's icon.

For example, the Word document looks like a file with a W in the corner, while an Excel spreadsheet looks like a file with an X in the corner.