About Toolzo

Our Mission

Toolzo provides professional-grade free tools that respect your privacy. All processing happens entirely in your browser — your files never leave your device.

What Makes Us Different

Unlike other free tool websites, Toolzo is built with privacy as a core principle. We don't require signup, we don't upload your files to servers, and we use privacy-friendly analytics only to understand how our site is used.

Our Tools

We offer a growing collection of tools including PDF merging, compression, splitting, rotating, calculators (percentage, GPA, age, BMI, compound interest), and productivity apps (to-do list, pomodoro timer, flashcards, habit tracker, book writer).

Technology

Toolzo is built with vanilla HTML, CSS, and JavaScript. We use PDF-lib for PDF processing, all running client-side in your browser. The site is a Progressive Web App (PWA) that works offline once installed.