To optimize graphics for Flash documents, use vector graphics, compress bitmaps appropriately, reduce background image size, limit font variety, and utilize Flash's symbol instances and optimization settings to maintain quality while reducing file size.
To optimize graphics for use in a Flash document, several practices should be employed. Firstly, use vector graphics where possible, as they are resolution-independent and typically have smaller file sizes than bitmaps. When bitmap images are necessary, you should compress the images and save them in appropriate file formats, such as PNG or JPEG, depending on whether you need transparency or not.
Additionally, minimize the use of large background images and use tiled backgrounds or solid colors when feasible. Limit the number of fonts and character sizes to reduce the file size. Lastly, utilize Flash's built-in tools such as symbol instances and optimization settings during the publishing process to trim down the file size even further without compromising quality.