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.
What compression ratio can I expect?
Typical PDFs compress 30-70%. Text-heavy documents reach 70%+ reduction. Scanned PDFs with images compress 20-40% since image data is already compressed.
Does compression affect text searchability?
No. Text layers remain fully searchable after compression. Only image resolution is reduced in high-compression mode.
Can I compress password-protected PDFs?
No. Remove password protection first using the PDF Unlocker tool, then compress.
What is the maximum file size?
Up to 100MB. Files larger than 100MB may cause browser memory issues. For larger files, split them first using PDF Splitter.