About

TrustPDF is a privacy-first, client-side PDF tool, released as open source under the AGPLv3 license.

It allows you to merge and split PDF documents directly in your browser
with no uploads, no accounts, no tracking.

Martin Hostnik

My name is Martin Hostnik. I am a civil engineer specialized in geotechnical and hydraulic engineering, with professional experience in advanced geotechnical design, numerical analysis, tunnel engineering, and soil-structure interaction.

Besides engineering, I also have a strong interest in software development, especially privacy-focused, browser-based tools built with Python, Django, JavaScript, and open-source technologies.

www.TrustPDF.net was created as a simple and transparent alternative to online PDF tools that require file uploads. The goal is to make common PDF tasks available directly in the browser, without accounts, storage, or unnecessary tracking.

You can also find my engineering tools project here: www.koplemo.com

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  • 🔒 100% client-side PDF processing — your files never leave your device
  • 📎 Merge multiple PDFs into one
  • ✂️ Extract pages from a PDF using flexible page ranges (e.g. 1-3,6,9)
  • 📱 Optimized for mobile and desktop use
  • 🧭 No login, no storage, no third-party cookies — fully private
  • 🧩 Built with PDF-Lib, Bootstrap 5, and SortableJS

This project is licensed under the GNU Affero General Public License v3.0 (AGPL-3.0).
You may: use, modify, and share the code; run the software publicly (e.g., host it yourself).
You must: publish the source code of any running version (e.g., on a website or SaaS).

📄 See LICENSE for details
🔗 Full AGPLv3 License Text

We use Umami Cloud for anonymous traffic analytics.
No cookies, no tracking, no personal data collected.

  • Open an issue for bugs or suggestions
  • Fork the repo for learning, self-hosting, or private use
☕ Buy me a coffee