I notice that if a CDR file contains bitmaps in it, the file size would become unreasonably huge.For example, I have a JPEG of 1.61MB. If I import the JPEG into a blank CDR file, with only the JPEG in the file, the CDR file size becomes 8.34MB.
I wonder what are the "excessive" information that is stored in the CDR file which causes the huge jump in file size.
You're importing a compressed JPG file Draw enters its actual size into memory.
Does that mean the JPEG (or any JPEG) actually still contains the uncompressed information within the file? I just tested with illustrator. With the 1.61MB JPEG imported, the AI file is 14.8MB, which is even bigger.How can I keep the CDR file small with a numbers of bitmaps in it? I often end up with file size of tens of MB with few bitmaps in it.
How many images at wht size and what resolution.
16 food photos and 1 background photo, all 150dpi
Right click any image and select bitmap resample, the dialog will tell the file size of that image. Do all the images and add them up. To simplify this and make is as small as possible group all images convert to bitmap.
No bitmap resample option in the right-click context menu. Anyway, it's on the property bar.Background = 197 MBPhotos = 5.94MB x 16 = 95.04 MBTotal = 292.04 MB (CDR file size 93.1 MB)If I combine all photos into one bitmap:Image size = 197MB (CDR file size 89.3 MB)Seem like combining everything into one doesn't help much. Anyway, I would not consider combining all photos into one bitmap in most cases, as I need to keep the content editable in future. Often, client tend to make minor changes (e.g. changes on the menu items, rearrange position, etc.) in future. I did some further testing as below:1. Removing the background, with only 16 food photos -> CDR file size 77.7 MB2. Removing all food photos, with only the background -> CDR file size 15.6 MBSo, seems like it's the food photos that's causing the big file size, despite the background is bigger size individually. Not sure how this works, because with only one big bitmap (197 MB), the CDR is smaller (15.6 MB), but with multiple small bitmaps (total 95.04 MB), the CDR is bigger (77.7 MB).
The CDR file is lossless compressed when saving. To read what's in memory shut CorelDRAW down completely, open the task manager, open CorelDRAW open your file let it set for a few seconds look at CorelDRAW memory in task manager before doing anything in CorelDRAW with the file.
To have quality you must have a minimum of resolution. To make an omelet you have to break some eggs. I understand keeping the file editable I do the same thing but as soon as it's approved I make an output version with all images flattened into one, then if needed I can send it anywhere.
Your files sizes are normal for quality at this output resolution.
Don't use lossy compression you'll just screw up your quality.