I have several Illustrator files that have multiple embedded bitmap images. Some are photos and some are detailed line art.
When exporting to PDF, it is possible to control downsampling and compression for images, but the settings apply to all embedded images equally.
How can I compress only the photos as JPEG and leave the line art images untouched (or compress them less)? Can compression and downsampling be controlled separately, image by image?
The line art images contain some colour (red, black and grey lines), thus I cannot just convert them to monochrome (or even grayscale) and disable downsampling for these specific images types in the PDF export settings.