Shrink a PDF by re-encoding its pages — best for scanned and image-heavy PDFs.
The Compress PDF is part of Toolio's PDF Tools collection — one of 64 free tools on the site. It is made for students, creators, office workers and anyone who needs a reliable compress pdf without installing software or creating an account. It works on phones, tablets and computers, right in the browser.
Yes — completely free. No sign-up, no account, no installation and no usage fees. Open the page and use it as much as you like.
No. This tool runs entirely in your browser using JavaScript — your files and text are processed on your own device and are never uploaded to a server.
Yes. Toolio is built mobile-first, so the Compress PDF works in any modern phone browser — Android and iPhone — as well as on tablets and desktop computers, with nothing to install.