Create an image which is not rectangular and which has either some gradient(s) or shadows or effects that might illustrate how well different file types support display.
Save the image in its original format. Then save it (or if you're using Serif DrawPlus, Export) as each of the following file types:
JPG
GIF
PNG
Note the size of each file.
Add the images to a presentation with a dark background which should emphasise the differences as in the sample provided.
Comment on the suitability of each file type, including advantages and disadvantages.
Add a note which explains the range of colours or colour depth available in each case. Illustrating the demise of a graphic or image as the number of colours is reduced can be effective evidence for higher grades too with your own research as to how the file size of an image is made up.
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