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Open-Source Notices
Open-source software used by hushleaf.
Last updated: 30 October 2026
hushleaf is built with the help of open-source software. We are grateful to the people who make it. Each part below is used under its own licence, and nothing in our Terms of Use limits your rights under these licences. The full list of open-source parts, with each licence in full, is published with the app at hushleaf.app/app/licenses.txt.
Main parts used in hushleaf
| Software | What it does in hushleaf | Licence | Copyright |
|---|---|---|---|
| React, React DOM | Builds the app's screens | MIT | Meta Platforms, Inc. and affiliates |
| PDF.js (pdfjs-dist) | Shows PDF pages on screen | Apache-2.0 | Mozilla Foundation |
| pdf-lib | Writes and saves PDF files | MIT | Andrew Dillon |
| @pdf-lib/standard-fonts, @pdf-lib/upng | Used by pdf-lib | MIT | Andrew Dillon and contributors |
| pako | Compression, used by pdf-lib | MIT and Zlib | Vitaly Puzrin, Andrei Tuputcyn; Jean-loup Gailly, Mark Adler |
| tslib | Small helper code | 0BSD | Microsoft Corporation |
Full licence texts
The complete licence text and copyright notice for every part, including smaller parts used by the ones above and any fonts, is in licenses.txt (hushleaf.app/app/licenses.txt).