Compress PDF Online Free
Reduce your PDF file size while maintaining quality
Drop PDF to compress
Upload multiple PDFs or Images
Your files never leave your device. 100% private and secure.
How It Works
Upload PDF
Drag and drop your PDF file into the blue box or click to select a file from your device.
Choose Compression Level
Select your desired quality level using the slider. Choose "High" for maximum size reduction or "Low" for best quality.
Download Compressed File
Wait a moment for the compression to finish, then click "Download" to save your smaller, optimized PDF.
Frequently Asked Questions
How does PDF compression work?▼
Will compression affect PDF quality?▼
Is it safe to compress PDFs online?▼
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About This Tool
Reduce PDF file size by up to 90% with our free PDF compressor online. Our advanced PDF compression tool optimizes images and removes unnecessary data while maintaining document quality. Perfect for reducing large PDFs for email attachments (Gmail, Outlook), uploading to websites, or saving storage space. Choose from multiple compression levels to balance between file size reduction and visual quality. Our browser-based PDF compressor processes files completely offline – no uploads, no cloud storage, ensuring 100% privacy. Compress password-protected PDFs, multi-page documents, and scanned files without file size limits. No registration required.
Why Use AeroPDF?
100% Private & Secure
Files are processed entirely in your browser. Nothing is uploaded to any server.
Lightning Fast
No waiting for uploads or downloads. Everything happens instantly on your device.
Works Everywhere
Use on any device with a modern browser. Windows, Mac, Linux, or mobile.