How To Submit
This mirror is a mostly-statically generated site based on Juniper/Server, which is a distributed repository system for WordPress licensed under the GPL. It works in tandem with the Juniper/Author plugin, which is meant to be utilized by plugin and theme authors who wish to self-host and distribute their plugins or themes.
The first step is to install that plugin, and the use a private Github token to import your repositories. From the administration panel in Juniper/Author, you'll be able to submit your plugins and themes to this mirror (or any other of your choosing). After a brief period of time (roughly 15 minutes), they should automatically show up here.
Thumbnail Images
The thumbnail images for each plugin or theme are pulled directly from each Github repository in the main /assets folder. You can see an example in this repository.
Three sizes are currently supported, 1200x800, 1544x500 and 772x250 - we strongly recommend people use the 1200x800 size as it's the most flexible in terms of aspect ratio. Simply add these images variants, refresh your data in Juniper/Author, and the next time the mirror repository updates, the images will be updated as well
Support
If you have any issues, please open a Github issuse for the Juniper/Author plugin.