What is the best way to edit these jpeg pictures?
Several steps are important. First never edit the original photograph. Open it in your picture editor and save it in a uncompressed format (TIFF, BMP, etc.). Now edit the uncompressed file format picture and save it in the uncompressed file format. If you need smaller version of the picture use the picture file that was saved in the uncompressed format. Resize the pictures and save the smaller picture under another name and if desired in a compressed format like JPEG. If you take the original JPEG and resize it, without converting it into another format, there is considerable picture degradation because the resizing causes compression over already compressed data.
