Licenses
Perplex is an open-source theme for the open-source software Hugo. There are no other mandatory software requirements, but the theme and the documentation ship with external software and content.
Perplex and its documentation
- The theme
- is released by Jörg (Georg) Makowski under the Apache 2.0 License.
- The documentation
- is released by Jörg (Georg) Makowski under the Creative Commons License (CC BY-SA) except marked material from other sources.
Website generator Hugo
- Hugo
- is released by its authors and contributors under the Apache 2.0 License.
Adopted Hugo Templates
- render-link
- toc-walk-headings
- have been released by Veriphor under the Apache 2.0 License and their motivation, function, and usage are documented there.
These templates have all been adapted to fit the style of the theme.
Fonts
- IBM Plex fonts
- are released by IBM to the public under the Open Font License (OFL).
Icons
- Material Symbols
- are released by Google to the public under the Apache 2.0 License.
The theme includes special sets, where fixed width and height values are replaced by a
viewBox, to let the icons adapt to the fluid layout.
Javascript libraries
- Lazysizes
- has been released to the public by Alexander Farkas under the MIT License.
Optional Javascript libraries
- KaTeX
- has been released by Emily Eisenberg, Sophie Alpert, and contributors under the MIT License.
- Mermaid
- has been released by Knut Sveidqvist and contributors under the MIT License.
Logos and pictures
- All logos
- remain under the copyright of their respective owners. Perplex logos are released under the Apache 2.0 License by Jörg (Georg) Makowski.
- All pictures
- Remain under the copyright of their respective owners. The image caption usually mentions the author and a link to the source except for images in the public domain.