Free PDF Compressor
Compress PDF files online while maintaining quality. Reduce file size up to 80% for easy sharing and storage. Works on all devices - mobile, tablet, and desktop. No registration required.
Select PDF file
or drag and drop it here
Fast, secure, and free PDF compression
Smart Compression
Advanced algorithms reduce file size while preserving text quality and readability
Lightning Fast
Process large PDF files instantly with our optimized compression engine
Privacy Secure
Your files are processed securely without compromising quality
Frequently Asked Questions
How much can I compress my PDF?
Typically 50-90% reduction depending on your PDF content. PDFs with images compress more (up to 97%), while text-only PDFs compress less (20-50%).
Will compression reduce PDF quality?
Our smart compression maintains readability. Images are optimized to 150 dpi which is perfect for screen viewing and printing. Text quality is preserved.
Is my PDF safe? Do you store uploaded files?
Your files are processed on our secure server and automatically deleted immediately after compression. We never store or access your documents.
What's the maximum file size I can compress?
You can compress PDFs up to 50MB. For larger files, consider splitting them first using our PDF split tool.
Can I compress password-protected PDFs?
Yes, but you'll need to decrypt it first using our PDF decrypt tool, compress it, then re-encrypt if needed.
How to Compress PDF Files
Upload PDF
Click to upload or drag and drop your PDF file. Supports files up to 50MB.
Auto Compression
Our smart algorithm automatically optimizes your PDF for the best size reduction.
Preview Results
See the file size reduction and quality comparison before downloading.
Download
Download your compressed PDF with significantly reduced file size.