Compress PDF
Compress Pdf — process, convert, and analyze with one click.
or drop PDF here
ZiloPDF makes it easy to compress PDF files online. Reduce the file size of your documents while maintaining original text, image layouts, and vector structures.
Why Choose ZiloPDF Compress Pdf Tool
Excellent Ratio & Quality
Our engine keeps layout vector components intact while compressing images and fonts.
Three Optimization Levels
Choose between Extreme (72 DPI), Recommended (150 DPI), and Less (300 DPI) options.
SSL-Certified Security
All files are protected with robust 256-bit encryption in transit.
Immediate Processing
Files process locally or in secure sandboxes with no waiting queues.
100% Free Service
No subscriptions, hidden payments, or user accounts are required.
Cloud Purge Strategy
All data is completely purged from our secure servers within 1 hour.
How to Compress Online?
Choose PDF file
Select the document you want to compress from your desktop or phone.
Select profile
Pick the optimal compression profile (Extreme, Recommended, or Low compression).
Compress document
Click Compress PDF to run the size optimization pipeline.
Download optimized file
Save the compressed PDF document instantly back to your device.
Everything You Can Do With ZiloPDF Compress Pdf Tool
- Reduce document size in seconds
- Select between compression levels
- Preserve layout geometry
- Process multiple documents securely
- Save compressed files to cloud