finolajc

Hello, I would like advice on how to downsize a photo without losing the sharpness and quality. I have images that are too large for my website - eg 4896x3264 px. I want to have them 900px on the horizontal dimension but when I use 'Resize Document' the quality is drastically reduced with lots of pixillation. I can use Unsharp Mask to improve it a little, but it is nothing like the larger image in quality. Is there a way to downsize without this high level of quality loss? I have attached the two versions of my image for refrence

I also need to import old Corel Draw files - I no longer have this program but used it alot, so now am stuck as far as editing them goes.