PDF Compressor - Reduce PDF File Size Online for Free
Our free online PDF compressor helps you reduce PDF file sizes significantly while maintaining excellent quality. Perfect for students, professionals, and businesses who need to share, store, or email PDF documents efficiently. No installation, no registration, and no file size limits!
- Use 200 DPI for documents with text
- Use 150 DPI for documents with images
- Enable grayscale for scanned documents
- Remove background images for smallest size
Secure & Private
All files are processed locally in your browser. We don't store or access your PDF documents on our servers.
Fast Processing
Compress large PDF files in seconds using advanced algorithms without compromising quality.
Free Forever
No registration required. No watermarks. No file size limits. Unlimited usage completely free.
Cross-Platform
Works on all devices - Windows, Mac, Linux, iOS, and Android. No software installation needed.
Why Use Our PDF Compressor?
Reduce PDF size to meet email attachment limits (usually 25MB)
Optimize PDFs for faster website loading and better user experience
Save cloud storage space by compressing PDF archives and documents
Quickly share compressed PDFs via WhatsApp, Telegram, or other messengers
Perfect For:
- Students: Compress lecture notes and assignments for easy sharing
- Business Professionals: Reduce report and invoice sizes
- Photographers: Optimize portfolio PDFs
- Researchers: Compress research papers and articles
- Administrative Staff: Reduce scanned document sizes
- Real Estate Agents: Optimize property brochures
📝 Compression Tips
For Text Documents: Use 200 DPI with High Quality setting for best results
For Image-Heavy PDFs: Try Medium Quality with image removal enabled
Maximum Compression: Use Extreme mode with grayscale for scanned documents
Preserve Quality: Use Auto mode for intelligent compression balancing
❓ Frequently Asked Questions
Is the PDF compression safe?
Yes! All processing happens locally in your browser. Files never leave your computer.
What's the maximum file size?
There's no limit! Our tool can handle any size PDF your browser can process.
Will compressed PDFs lose quality?
Minimal quality loss with smart compression. Text remains sharp and readable.
Do you keep my files?
No. Files are deleted immediately after processing. We don't store anything.