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I'm looking for a way to reduce PDF size that I generate with Quartz. I'm drawing images with CGContextDrawImage in a CGPDFContext. What I'm afraid of is that the images are saved as Bitmap and not JPEG. Is there a way to check for that and a way to control that when writing the PDF?
I also tried reducing downscaling the image before writing it to the PDF context but I end up with an even larger file (although the page size in pixels is smaller).
Thanks!
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In the latest version of Adobe Acrobat, open the PDF you wish to re-save as a smaller file, choose File, Save as Other, and then Reduced Size PDF. You'll be prompted to select the version compatibility you need — it defaults to Retain existing to keep the current file settings — and then you can click OK to save.
There is no public API for setting CGPDFContext's image compression settings.
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