Tool
Compress PDF.
Reduce your PDF file size with adjustable quality settings.
Drop a PDF file here or click to browse
PDF files only
PDF
Compression Level
Small file High quality
Quality
50%
Estimated size
—
Balanced compression — good quality with moderate size reduction
Compressing PDF...
Done!
Before: — After: — —
How to compress a PDF
1
Upload
Select or drag a PDF file.
2
Choose quality
Drag the slider to set compression level.
3
Download
Download your compressed PDF.
FAQ
Compress PDF FAQ.
Common questions about compressing PDF files.
How does PDF compression work?
Our compress PDF tool re-encodes images at lower quality and removes unnecessary metadata to reduce file size. Text and vector content remain sharp.
Will compression affect quality?
At high quality settings (70-100%), the difference is barely noticeable. Lower settings reduce image quality more aggressively for smaller files.
What is the best compression level?
For most documents, 50% offers a good balance. Use 80%+ for print-quality PDFs, and 20-40% for web sharing where file size matters more.
Is there a file size limit?
No artificial limit. Your browser's memory is the only constraint. Most devices handle PDFs up to several hundred megabytes.