Compress PDF
Shrink a PDF with presets from best quality to extreme — or keep the text selectable — and see the size before and after.
Drop a PDF to compress
or browse from your device — see the size before and after
Compress PDF files online — fast and private
Our PDF compressor shrinks large files in seconds, with nothing to install. Keep the text fully selectable, or redraw every page as a compressed image for the biggest savings — with presets from best quality to extreme, plus your own resolution, quality and black-and-white settings. The compressed PDF opens in the editor with the size before and after, and you can try another level there in one click.
4 presets + custom
From best quality to extreme compression, or set your own DPI and quality.
Private by design
Files travel over an encrypted connection and stay private to you.
Text-safe option
Optimize mode keeps your document fully selectable and searchable.
Frequently asked questions
You can upload your PDF, compress it and keep editing in the AI Studio before you pay anything. Downloading the finished file is part of every MojoPDF plan — start with the 7-day trial for $1 and cancel any time.