Disadvantages of bitmap graphics
Bitmap images are not resized well, Bitmap image can be made smaller without loss to the quality of the picture, but that are not too made larger without loss to the quality of picture.
Bitmap is a large file size, a file can take a long time to load, send and receive.
Many times compressing a bitmap file can result in artifacts, areas of blurry or incorrect color that can ruin the detail and overall look of an image.