%random_uuid% and %_random_uuid_% placeholders

[ghost]

Hello, I would like for my server to display a rendering of a random online player but most sites such as visage accept uuid only and there is no random player uuid placeholder. I think this could easily be done, especially since the username and uuid is stored in PlayerCache.json. Also, are images from urls cached? By this I mean are images that are from URLs stored in memory instead of requesting the same image from the website every time someone pings such as https://visage.surgeplay.com/head/512/cecea4da3bc941f9a9109e7be63e1295 If not that would be an excellent option (some people might have image urls that change for some reason and therefore cannot be cached) which would allow faster ping responses for links and save bandwidth.