There are two types of size associated with the pictures. One is the file size and other is the actual size of the picture (may be considered as the view size of the picture.) Usually the picture larger in the actual size is also larger in the file size. For a website, you usually don't have much uploading size. One of the methods to reduce the file size of a picture is to reduce its actual size. With the reduction in the actual size, the file size would also be decreased. For example, if a picture of frame size 1024x768 pixels is of file size 100kb, the same picture in the frame size of 800x600 pixels might be the file size of 70kb. You can decrease the frame size of the picture using any of the picture editors available in the various graphics soft wares.
The other method to reduce the file size of a particular file is to change its format. A graphic file can be used as .jpg file, .bmp file and several other extensions and types for graphics files are available. So if you change the format of the file, you can increase and decrease the size of the picture file.
The other method to reduce the file size of a particular file is to change its format. A graphic file can be used as .jpg file, .bmp file and several other extensions and types for graphics files are available. So if you change the format of the file, you can increase and decrease the size of the picture file.