Unfortunately in this case, it really seems to be the PieceInfo that's the problem:magnussandstrom wrote: ↑Wed Apr 23, 2025 9:07 pm Just a heads up, to "flatten and rasterize" objects often increases the file size.

Unfortunately in this case, it really seems to be the PieceInfo that's the problem:magnussandstrom wrote: ↑Wed Apr 23, 2025 9:07 pm Just a heads up, to "flatten and rasterize" objects often increases the file size.
Thanks for the reply, but I'm not sure if this is the issue - I just tried Save As (and also Save as other → Reduced size PDF) in Acrobat, and the output file was the same size in both cases.