Credits
Open-source software we build on
QRPetal would not exist without these projects. Thank you to everyone who builds and maintains them. All of them allow commercial use; we keep their licence notices as their licences require.
The QR engine
| Project | Licence | What it does for QRPetal |
|---|---|---|
| qrcode-artisticLars Heuer | BSD 3-Clause | The artistic compositing method QRPetal adapts. Its full notice is kept in our source repository. |
| SegnoLars Heuer | BSD 3-Clause | Encodes your text into a standard QR code. |
| PillowJeffrey A. Clark and contributors | MIT-CMU (HPND) | Opens, fits and draws on your photo. |
| NumPyNumPy developers | BSD 3-Clause | Fast pixel maths. |
| OpenCVOpenCV team | Apache 2.0 | First of the two QR readers in the scan check. |
| zxing-cppAxel Waggershauser and contributors | Apache 2.0 | Second QR reader in the scan check. |
| FastAPISebastián Ramírez and contributors | MIT | The web API that makes your codes. |
| UvicornEncode OSS | BSD 3-Clause | Runs the API server. |
| python-multipartAndrew Dunham and contributors | Apache 2.0 | Reads photo uploads. |
This website
| Project | Licence | What it does |
|---|---|---|
| Astro | MIT | Builds this website. |
| Plus Jakarta Sans | SIL Open Font License 1.1 | The typeface on this site, self-hosted via Fontsource. |
| satori and resvg-js | MPL 2.0 | Draw the social sharing images at build time. |
| PostHog JS | MIT | Cookieless, privacy-friendly analytics (only when enabled). |
qrcode-artistic notice
The artistic compositing method in QRPetal is adapted from qrcode-artistic, used under this licence:
Copyright (c) 2016 - 2020, Lars Heuer All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"QR Code" is a registered trademark of DENSO WAVE INCORPORATED.