Open-source components.

The viewer uses PDF.js and its fonts. The mobile apps also include Capacitor and plugins for local files and sharing. License texts are included below.

• Sample PDF fonts · DejaVu
• PDF.js · Apache 2.0
• PDF CMap · Adobe
• Standard fonts · Foxit
• Standard fonts · Liberation
• Capacitor Core
• Capacitor Android
• Capacitor iOS
• Capacitor Filesystem
• Capacitor Share
• Capawesome File Picker