picture in GIF or JPEG format
Two common formats for saving pictures for use on Web
pages are GIF and JPEG :
GIF format works best for line
drawings, such as clip art, that contain up to 256 colors, and
for pictures that use large blocks of solid color. GIF format
uses lossless compression to reduce your picture's file size.
When you save a picture as a .gif file, you can decide whether
to keep the transparent areas of your picture or convert those
areas to a solid color.
- JPEG format works best on photographs and
scanned pictures that use True Color or smooth gradations of
color. JPEG format uses lossy compression to reduce your
picture’s file size, so you’ll notice that the picture
quality decreases as the file size becomes smaller. When you
save a picture as a .jpg file, the transparent areas in your
picture are converted to a solid color.