A safe, lossless pass that re-encodes a PDF’s internal structure, done entirely on this device.
Yes, completely free with no sign-up, no watermark, and no limit on how often you use it.
No. Every conversion runs in your browser, on your own device. Your file is never sent to a server or stored anywhere but your device.
It depends -- documents with many small internal objects shrink noticeably, but a PDF that’s mostly a few large scanned images won’t shrink much since embedded image data isn’t touched.
Yes -- it works in any modern browser on a phone, tablet, or desktop, with no app to install.