I use Paintshop Pro to make my thumbnails. I also use it to convert my 1024 x 768 or 650 x 768 images to jpeg because it makes a smaller file at max quality (min compression) than Photoshop does. Sharpening an image with the High Pass filter in Photoshop increases the file size and sometimes it ends up more than the 500kb limit. After I resize the large image down to 200 x whatever to stay within the dimension limits here, I do a "Sharpen" and then save that at the highest quality (least compression) that ends up below 15kb. Ranges between 7% and 20% compression and typically is around 12%, depending on how detailed and/or contrasty the image is. Hope you get it figured out - a great thumbnail can get you a lot more viewings and it is the "first impression" that one gets when they see your images. Rick