About Catena
Catena is an enterprise-ready, privacy-first PDF toolkit powered by WebAssembly that handles all document operations directly inside your browser with zero server dependency.
Our Mission
We believe that everyone should have access to powerful PDF tools without compromising their privacy or paying expensive subscription fees. That's why we created Catena – a comprehensive PDF toolkit that puts your privacy first.
Unlike traditional PDF services that require you to upload your files to remote servers, Catena processes everything locally in your browser. Your sensitive documents never leave your device, giving you complete control over your data.
Whether you're a student, professional, or casual user, Catena provides all the tools you need to work with PDFs efficiently and securely.
Our Values
Privacy First
Documents remain exclusively on your device throughout the entire processing lifecycle — no external transfers occur at any point.
Fast & Efficient
WebAssembly-accelerated operations deliver near-native processing speeds without requiring any software installation or network latency.
Accessible Everywhere
Fully localized in 9 languages and compatible with any modern browser on desktop, tablet, or mobile — no setup or plugins required.
Secure
Engineered with a transparent codebase and verifiable privacy guarantees that eliminate trust dependencies on external infrastructure.
Built with Modern Technology
Catena leverages state-of-the-art browser technologies including WebAssembly, modern JavaScript APIs, and advanced rendering engines to deliver uncompromising performance.
- Next.js - For fast, SEO-friendly page rendering
- WebAssembly - For near-native PDF processing performance
- Web Workers - For non-blocking background processing
- pdf-lib & PDF.js - Industry-standard PDF manipulation libraries
- IndexedDB - For secure local storage of your work
This combination of technologies allows us to provide professional-grade PDF tools that run entirely in your browser, without any server-side processing.