Will it downsample images?

Yes — Ghostscript downsamples embedded images to the preset's target DPI.

Industry-standard; the same engine Acrobat uses for its PDF optimizer.

Compress PDF

Shrink PDFs using Ghostscript's quality presets. Optionally cap image DPI.

Drop a file

.pdf · up to 100 MB

Quality preset

Force image DPI (blank = preset default)

Will it downsample images?: Yes — Ghostscript downsamples embedded images to the preset's target DPI.
Why Ghostscript?: Industry-standard; the same engine Acrobat uses for its PDF optimizer.