What is PDF Compressor?
Free online PDF compressor. Reduce file size by optimizing images and removing redundant data. Perfect for email attachments and web uploads. Browser-based for complete privacy.
Use Cases
- ◆Email attachments
- ◆Web uploads
- ◆Document archiving
- ◆Mobile transfer
How to Use
- 1Upload PDF
- 2Choose compression level
- 3Click Compress
- 4Download compressed PDF
Features
- ✓Multiple compression levels
- ✓Browser-based
- ✓Preview file size
- ✓Free
FAQ
Does compression reduce quality?
Light compression barely affects quality; heavy compression reduces image resolution.
What is the max file size?
We recommend under 100MB.
Is this tool free?
Yes — completely free. No accounts, no paywalls. Just open the page and go.
Does my data get sent to a server?
No. Everything runs in your browser. Your data never leaves your device.
Does it work on my phone?
Absolutely. Works great on phones, tablets, and desktops alike.
How fast is it?
Instant for most inputs. Large datasets might take a second or two.