Shrink a scanned or image-heavy PDF to fit an email or upload limit. Everything runs in your browser; the file is never uploaded.
No. The PDF is compressed by your own browser, so private documents stay on your device.
Each page is redrawn as an optimised image. This works best for scanned documents and photo-heavy PDFs. Text becomes part of the image, so it can no longer be selected.
"Balanced" suits most documents. Use "Smallest file" for strict upload limits and "Best quality" when small print must stay sharp.