We are developping a website selling pictures. The pictures are uploaded on the site in High definition (300dpi 2600pixel) and need to be scaled in different sized. We need to scale it to a reduced size of 300dpi 1600pixel. We are using Image Cache with ImageGD to do the scaling but it convert the image in 72dpi when we want to keep the 300dpi ratio.
Please bid if you have experience working with image resizing.