JPEG Files

JPEG (.jpeg or .jpg) files follow the standards set by the Joint Photographic Experts Group. These files use a variable compression method that is called lossy compression because of the loss of image quality as you increase the compression. However, the JPEG compression scheme is extremely good and you can sometimes compress the file up to 200:1 without severe loss of image quality. JPEG is consequently a popular format for posting image files on the Internet for minimum file size and fast download time.

Interface

When JPEG is the chosen output format, clicking Render or Setup in the Render Output File dialog displays the JPEG Image Control dialog.

Quality: Move the slider to the level of quality you want: the higher the quality, the larger the file size. In general, files compressed with the slider set to Best have compression ratios between 5:1 and 15:1.
File Size: Move the slider to the size of file you want: the larger the file, the higher the quality.
Smoothing: Move the slider to the level of smoothing you want: the higher the level of smoothing, the larger the file size.