Although digital pictures come in a variety of file formats, many of the pictures on your computer probably use the common JPEG format. This is the file format most digital cameras use to save good-quality images without creating large files. In addition, many programs can open pictures that are saved in the JPEG format.
However, you might have pictures (or drawings) that you want to convert and save as a different type of picture file. When you save a picture in a different format, the original picture isn't replaced; instead, a new picture file is created and saved.
Open Paint by clicking the Start button , clicking All Programs, clicking Accessories, and then clicking Paint.
Type a file name in the File name box, and then click Save.
Paint doesn't work with all types of picture files. For example, you can't open a picture in RAW format using Paint. For file types that Paint doesn't support, you'll need to use a photo editing program.