D2

Photoshop
is a normal Photo shop image as it is a Photo shop image it allows you to change and edit specific layers. But the downside is the image file is very large so you need to compress the file so it is a size that is good for what you want to use the image for for example the JPEG is 23.83k and it would take 9 secomds to download but the PNG file is 92.31k and would take 34 seconds to download the diffrence in the size is from changing the ammount of colours in the image and changing the resolution this changes the size so it could be better to use for web images or a diffrent size would be better for printing