Crop and Compress 1029 Photo Images for Internet

Need all images to be cropped and shapped to 800 x 800 pixels. You may need to lift some images onto a white background if they do not fit or play with the colour of the background but most should be fine to cut, shape and optimise for internet. Each picture is of children's clothing garment or accessories and around 5mb and I need images preferably at 20kb or max. 30kb if possible but can send you a few so you can try and see what you can achieve. I don't want you to change the quality to be inferior or the image intensity so it has to be directly like the colours shown on the photo. There are an odd few images that are already smaller than the 800 x 800 so you can try to manipulate or I will need to take new pictures. There may be another up to 20 images that we need to include and I will need to send so you need to be aware of this when you bid. Any writing on the labels will need blanking out not to show the manufacturer but there are not many of them. Keep image names as they are. I have done some examples which I have attached so you know what I mean. They are only examples as I would do the project myself if I could get them exactly 800 x 800 but an easy project for a person who can do easily. I also need a watermark adding to each image which we need to agree on before the project starts so an example would be good but I have enclosed a sample of what I used before so you can see the website and have a look at the images that are placed there now. I want you to design your own but an example of what I am using is attached - middle aligned horizontally and vertically. Size to be agreed but enough to see but not too much to be obtrusive. Maximum I wish to pay is 40 US dollars so bear this in mind when bidding.