PDF compressor
Smaller PDFs. Same document.
Pick a preset — screen, ebook, printer — and the PDF shrinks via Ghostscript: fonts subsetted, duplicates de-duped, images downsampled. Optional grayscale and metadata stripping for extra savings.
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Compression preset
Screen gives the smallest file; choose Printer/Prepress when print sharpness matters.
Image DPI override auto0 = use preset default
Force a specific downsampling resolution. Lower = smaller file but blurrier images.
Ghostscript will run a deep recompression pass — expect 5–30 seconds on larger PDFs. If the source is already optimised the "Printer" preset may actually produce a slightly bigger file; try "eBook" or "Screen" for real savings.
Ghostscript presets
Image DPI override
Grayscale mode
Metadata stripping
Font subsetting & dedup