The Targa (TGA) format supports images of any dimensions with between 1 and 32 bits of color. It is designed for Truevision's hardware, but it is also used in other applications. For more information on the Targa format, see Targa.
To save a file in Targa format (ImageReady):
Do one of the following:
In Photoshop, choose File > Save As and choose Targa from the Format menu.
In ImageReady, choose File > Export > Original Document, and choose Targa from the Save as Type (Windows) or Format (Mac OS) menu.
Specify a filename and location, and click Save.
In the Targa Options dialog box, select a resolution, select the Compress (RLE) option if you want to compress the file, and then click OK.