Also I like your photo technique. They are well lighted to see the details. So many times peoples pics are dark and it is hard to see the detail.
Bernd
I use Ifranview for my every day photo editor program. It is a free download and is well supported as it is a product of the IT labs at the University of Vienna. The program is intuitive to use and will allow for resizing and image correction with a couple of simple keyboard prompts.
I use a basically inexpensive Kodak digital snap shot camera and shoot most stuff on the "Auto" setting. Once I have the picture in the large format I simply use Ifranview to download it and edit it to the size I desire. If the picture is too dark I use the gamma correction to adjust the picture. The same effect can be achieved by utilizing the darkness and contrast but the Gamma is a single adjustment sufficient for most web resolution shots. If you have need to conserve bandwidth as some sites do, the Save mode allows you to decrease the quality when you save the photo to your files.
http://www.irfanview.com/All in all, I whole heartily recommend Ifranview for anyone looking for a simple photo editor. The price is right and it works.
I have no financial interest in the software mentioned. I am just a satisfied user. As usual Your Mileage May Vary (YMMV).