Portable Network Graphics (png)

Portable Network Graphics Format (*.png) is an alternative to GIFs for web graphics. Although at present the format is not supported by many of the major browsers, this should change in the future.

The format comes somewhere between JPEG (which is smaller because of compression) and GIF (which has a smaller color palette). PNG format is therefore useful for images that have smaller dimensions but are richer in tones and detail.

There is no dialog associated with this format, the image being saved straightaway.

See:

Image file formats