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Compress PDF
Reduce PDF file size online for free — 100% private, your file never leaves your browser. Great for scanned documents.
How to use Compress PDF
- 1. Drop in the PDF you want to shrink.
- 2. Choose a compression level — Recommended is a good balance of size and quality.
- 3. Download the smaller PDF. If your file is already optimized, we’ll tell you and keep your original.
💡 Tip: Compression works best on scanned or image-heavy PDFs. Text-only PDFs are often already as small as they can be.
Frequently asked questions
Is Compress PDF free?
Yes — 100% free, with no account or sign-up required.
Is my data safe and private?
Your PDF is processed locally in your browser and is never uploaded to any server.
Do I need to install anything?
No. It works in any modern browser on desktop and mobile.