Images are located under these folders.Open folder to start image processing - so it will generate thumbnails from large images. Also you can click on some image to open it in larger format. After that you will be able to set some image settings like: invert image, lighten image and desaturate image. Textual buttons are located top on the page. Anyway there is lot of options and possibilities.

there is shown only basic processing. (this is DEMO PAGE1)