Compress PDF online for free
Reduce PDF file size without losing quality. Free online tool, no installation required. 100% client-side processing. Files never leave your device.
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Why Choose MendPDF?
No software to install. Works directly in your browser
Completely free with no hidden charges or subscriptions
Access from any device: phone, tablet, or computer
Frequently Asked Questions
How do I compress a PDF without losing quality?
MendPDF's compression tool strips unnecessary metadata and optimizes internal structures. Choose 'Recommended' for balanced quality or 'Extreme' for maximum size reduction.
Can I compress a PDF to under 100KB?
Yes, depending on the original file. MendPDF offers extreme compression that can significantly reduce file sizes while maintaining readability.
Is PDF compression done on my device?
Yes. All compression happens 100% locally in your browser using WebAssembly. No files are ever uploaded to any server.
Zero-Trust Architecture
MendPDF uses 100% client-side WebAssembly processing. Files never leave the device. Zero-Trust architecture. No server uploads. All PDF manipulation happens locally in your browser, ensuring complete data privacy and security.