Compress PDF on Windowsno install needed
Windows has no built-in PDF compressor, and most desktop tools want an install or a paid upgrade. This page does it in Edge, Chrome or Firefox, with nothing uploaded and nothing to install.
Drop PDF files here
or click to choose files
100% private — files never leave your device
How it works on Windows
Drag a PDF onto the drop zone or browse to it, and the tool compresses it — the same engine desktop compressors use, running inside your browser tab. Pick a quality preset or a target size like 200KB or 1MB. The compressed file lands in your Downloads folder and your original never leaves the PC.
Compress to an exact size
Compress a PDF anywhere
Frequently asked questions
How do I compress a PDF on Windows without software?+
Open this page in Edge or Chrome, drop your PDF in, and download the smaller version to your Downloads folder. No install and no sign-up.
Does Windows have a built-in PDF compressor?+
No. Windows can print to PDF but can't reduce an existing PDF's size. This browser tool fills that gap.
Does it work on Windows 10 and 11?+
Yes, in any modern browser on either version.
Are my files uploaded anywhere?+
No. Compression runs locally in the browser, so the PDF stays on your machine.
Is there a catch or a paywall?+
None. It's free, with no watermark, no limits and no account.