No source code whatsoever.

Don’t spread 0-effort misinformation. It takes 20 seconds to find the source.

There is a zip with the full project for ff and chrome respectively, which you can compile yourself and verify and read.

Their strategy is to “hide” it because of the years long dmca takedowns. Read the wikipedia page on that if you want some extra info.

https://gitflic.ru/project/magnolia1234/bpc_uploads/file?branch=main