4 ms·
I've not tested this carefully, but AFAIR GhostScript re-compresses raster images and JPEG decommpress/compress round-trip reduces quality. QPDF keeps images in
by citrin_ru 5y ago
I've not tested this carefully, but AFAIR GhostScript re-compresses raster images and JPEG decommpress/compress round-trip reduces quality. QPDF keeps images intact but probably compresses less (in rare cases it increases size so one have to check which file is smaller):
qpdf --recompress-flate --object-streams=generate --compression-level=9 in.pdf out.pdf