I am trying to do something similar. I would like to use the intermediate "normalized" images and delete the original, larger images. That way my users can upload any image without worring about resizing it, and I can delete the original files so it won't eat up disk space.
I tried Abbas Ali's hack above, and it does eliminate the link to the original file for those that have an intermediate image. However, you can't simply go through the directory and delete all files that do not start with "thumb_" and "normal_". The reason is that if your original files is smaller than the standard size for intermediate images, an intermediate image is not created, and Coppermine simply displays the original image instead of an intermediate image.
It's even more complicated than that, because I have an original image that is right on the borderline for size, and Coppermine actually created a "normal_" file for that image, but it does not display it.
A suggestion for a future version of Coppermine would be to create an intermediate or "normalized" image file for every image that is uploaded, and then automatically delete the original image. That way all my image files will be the same size (the purpose of the intermediate image) and my users do not need to worry about resizing the images ahead of time to save disk space. Does anyone have any ideas on how to do this with the current version (1.3.2)?
By the way, I don't know if anyone is interested or not, but if anyone wants to look into the intermediate image anomally that I described above, here are the details so you can reproduce it.
Image:
http://www.benandleanna.com/eagle/eagle_takeoff.jpgSettings: Method for resizing: Image Magick
Quality of JPEG files: 75
Use dimension: Height
Max [height] of an intermediate picture: 400
When I upload this picture with these settings, an intermediate file is created (normal_eagle_takeoff.jpg), but when the picture is displayed in "displayimage.php" the original file (eagle_takeoff.jpg) is shown. Please let me know if you need any more information. Thank you.