Filename Extensions

The name given to a computer file to distinguish it from other files.

The last characters in a file name (after the period) that identifies the type of file and the program used to create the file.

The reduction of file size in order to save space, but oftentimes results in a reduction of quality.

The filename extension for a Microsoft Word document.

The filename extension for a Microsoft Excel spreadsheet.

The filename extension for a Microsoft PowerPoint slide show.

A file format for pictures that are highly compressed, that only recognize 256 colors, can retain transparency, and are oftentimes animated.

A file format for compressed pictures, which are used by most digital cameras and cell phones and can recognize the full range of colors.

A file format for a non-compressed picture, which is much larger in size than a JPEG or GIF.

A file format for graphics that offer a more powerful alternative to the GIF format as they are not restricted to 256 colors, support better transparency, and have better compression.