Compress PDF Files Privately
100% client-side compression • No uploads • No registration • Completely free
Drop PDF file here or click to select
Maximum file size: 200MB
Why Choose PDFAlive?
100% Private
Your files never leave your device. All processing happens locally in your browser.
Fast Processing
Powered by WebAssembly for near-native performance directly in your browser.
Smart Compression
Multiple quality levels with intelligent optimization for images, fonts, and metadata.
Works Everywhere
Compatible with all modern browsers on desktop and mobile devices.
Your Privacy Matters
No Server Processing
All compression happens in your browser using WebAssembly technology.
No Data Collection
We don't collect, store, or analyze your documents or personal information.
Open Source
Our code is transparent and auditable. You can verify our privacy claims.
Frequently Asked Questions
How much can I reduce my PDF size?
Typically 50-70% reduction without noticeable quality loss. Results vary based on content and original compression.
What's the maximum file size?
We support files up to 200MB. Larger files may not process reliably due to browser memory limitations.
Does this work on mobile?
Yes! PDFAlive works on all modern mobile browsers, though performance is better on desktop for large files.
Is it really free?
Yes, completely free with no limits. We're supported by non-intrusive advertising.