Open-source licences
NonaPDF is built with excellent open-source software and fonts. We’re grateful to everyone who makes them. Each is used under its own licence, listed below.
Software
| Component | What it does in NonaPDF | Licence |
|---|---|---|
| PDF.js (Mozilla) | Displays PDF pages | Apache License 2.0 |
| pdf-lib | Saves edits, comments and page changes | MIT |
| fontkit (pdf-lib fork) | Reads and embeds fonts | MIT |
| qpdf | Unlocks and password-protects PDFs | Apache License 2.0 |
| qpdf-wasm | Runs qpdf inside the app | ISC |
| Electron (includes Chromium and Node.js) | Runs NonaPDF as a desktop app | MIT (Chromium and Node.js components under their own licences, included with the app) |
| electron-updater | Automatic updates | MIT |
Fonts
These free fonts are built into NonaPDF so edits can match common fonts. Other free fonts are downloaded from Fontsource only when needed. All are free to use and embed.
| Font | Licence |
|---|---|
| Arimo, Tinos, Cousine | SIL Open Font License 1.1 |
| Carlito, Caladea | SIL Open Font License 1.1 |
| Gelasio | SIL Open Font License 1.1 |
The full licence texts are included with NonaPDF. Product names mentioned for font matching belong to their respective owners; NonaPDF isn’t affiliated with them.