Crop region and image resolution: a dilemma about final image file sizes
Posted: Fri Oct 18, 2019 10:39 pm
Dear GraphicConverter devs,
I love GC because it's the only app I know that will do something that saves me a lot of time: batch conversion/modification of specific region of images. My work is to prepare materials for online courses of a big university and I often have to design tutorials, lessons, etc. So I deal with a huge amount of images and those images most of the time need to be cropped. So I long ago have started to rely on GC to do help me out. I set Convert & Modify as follows: specific file type / select use batch + www ready / Crop Region with the proper perimeters and hit Okay. Works like magic! My experience has always been cropping smaller areas thus I ended deleting large portions from the originals, and I could see that the final file sizes would be smaller when in comparison with the source files. But recently I've been cropping some files that just need cropping of the image borders and I noticed that the final files sizes remain about the same size of the originals or even a little larger. A file that is 1.2M sometimes become 1.3! I have even tried deselecting XMP/ICC profile (Interlaced and Filter are always set to none) but that didn't change anything. As a way to compare, I cropped a file using MacOS Preview app and the final file was about 617KB. Cropping the same image using GC I got 901KB and also 896KB (after playing around with XMP/ICC profile selecting/deselecting). I am at a loss and the necessity to crop images is not just a matter of design but also to make the files lighter and smaller. I cannot decrease the quality of the images or shrink them. Ideally I'd need to just crop out what I don't need and keep the quality of what I'm preserving to keep it just as the same as in the original file. More or less like the result achieved with the Preview app I aforementioned. Can you please help me with this matter?
I read this topic and it seemed to be dealing with similar issue as mine (viewtopic.php?f=3&t=6106) but I don't know if the same solution applies (plus I don't know if "fat file" is really the description for what I'm chasing here). As I said: I need the image quality and resolution to remain the same as in the original but it's obvious that file size will decrease if I'm deleting portions of picture. Thank you!
I love GC because it's the only app I know that will do something that saves me a lot of time: batch conversion/modification of specific region of images. My work is to prepare materials for online courses of a big university and I often have to design tutorials, lessons, etc. So I deal with a huge amount of images and those images most of the time need to be cropped. So I long ago have started to rely on GC to do help me out. I set Convert & Modify as follows: specific file type / select use batch + www ready / Crop Region with the proper perimeters and hit Okay. Works like magic! My experience has always been cropping smaller areas thus I ended deleting large portions from the originals, and I could see that the final file sizes would be smaller when in comparison with the source files. But recently I've been cropping some files that just need cropping of the image borders and I noticed that the final files sizes remain about the same size of the originals or even a little larger. A file that is 1.2M sometimes become 1.3! I have even tried deselecting XMP/ICC profile (Interlaced and Filter are always set to none) but that didn't change anything. As a way to compare, I cropped a file using MacOS Preview app and the final file was about 617KB. Cropping the same image using GC I got 901KB and also 896KB (after playing around with XMP/ICC profile selecting/deselecting). I am at a loss and the necessity to crop images is not just a matter of design but also to make the files lighter and smaller. I cannot decrease the quality of the images or shrink them. Ideally I'd need to just crop out what I don't need and keep the quality of what I'm preserving to keep it just as the same as in the original file. More or less like the result achieved with the Preview app I aforementioned. Can you please help me with this matter?
I read this topic and it seemed to be dealing with similar issue as mine (viewtopic.php?f=3&t=6106) but I don't know if the same solution applies (plus I don't know if "fat file" is really the description for what I'm chasing here). As I said: I need the image quality and resolution to remain the same as in the original but it's obvious that file size will decrease if I'm deleting portions of picture. Thank you!