How It Works
Understanding 100% local PDF processing in your browser.
The TrustPDF Difference
Traditional PDF Tools
Your files pass through external servers
TrustPDF.eu
Your files never leave your device
The Technology Behind It
WebAssembly
High-performance code runs natively in your browser at near-native speed, enabling complex PDF operations locally.
Built-in Browser Features
Modern browsers have built-in capabilities for file handling, image processing, and encryption - all without sending data anywhere.
Local Encryption
PDF encryption and decryption happens entirely in your browser using industry-standard algorithms.
Common Questions
Does it work offline?
Yes! Once the page is loaded, you can process PDFs without an internet connection. The tools run entirely in your browser.
Is there a file size limit?
The limit depends on your device's available memory, not our servers. Most modern devices can handle files up to several hundred MB.
How can I verify files are not uploaded?
Open your browser's Developer Tools (F12) and check the Network tab while processing a file. You'll see no file uploads to any server.
Which browsers are supported?
All modern browsers: Chrome, Firefox, Safari, Edge. We recommend keeping your browser updated for best performance.