Compress PDF on Windows — Free, No Software to Install
Reducing a PDF's file size on Windows doesn't require Adobe Acrobat or any installed software.
Start Redacting for Free →The Easiest Way to Compress PDFs on Windows
Reducing a PDF's file size on Windows doesn't require Adobe Acrobat or any installed software. Our free browser-based compressor works in Chrome, Edge, and Firefox on Windows 10 and 11. Upload your PDF, compress it in seconds, and download the smaller version — nothing leaves your PC.
- Works in Chrome, Edge, and Firefox — no software installation needed
- Files stay on your Windows PC — no uploads, no server processing
- Reduce file size by up to 80% — perfect for email and file sharing
- Completely free — no software purchase, no subscription needed
How to Redact — 3 Simple Steps
Open in Chrome or Edge
Open this page in Chrome, Edge, or Firefox on your Windows PC and select your PDF.
Compress the PDF
Our tool automatically compresses your PDF for the best balance of size and quality on Windows.
Download to Your PC
Download the compressed PDF to your Windows Downloads folder — ready to email or share.
Key Features
🔒 Your Files Never Leave Your Device
Unlike tools that upload your PDFs to remote servers, our tool processes everything locally in your browser using WebAssembly. No server ever sees your documents — not even us. This makes it one of the most private PDF tools available, completely free.
Frequently Asked Questions
Does PDF compression work on Windows 10 and Windows 11?
Yes — works on both Windows 10 and Windows 11 in Chrome, Edge, or Firefox.
How much smaller will my PDF be after compression on Windows?
Image-heavy PDFs can be reduced by 60-80%. Text-only PDFs typically see 20-40% reduction.
Does it work with Microsoft Edge on Windows?
Yes — Microsoft Edge is one of the best browsers for our tool on Windows with excellent WebAssembly performance.
Is this better than online compressors that upload my files?
Yes — your PDF never leaves your Windows PC. Other online tools upload your file to their servers, creating privacy risks.
Ready to Redact Your PDF?
Free, instant, private — no account or software required.
Start Redacting for Free →