

Other have already explained, but to simplify, a tag-based media archive. The original is Danbooru (cardboard), an anime-based one (including NSFW, so I haven’t linked). They often tend to be fandom-based.
A high-quality safe-for-work example of a standard online booru is Find A Fox.
OP’s tool is a local single-user booru instead, using Hydrus Network as an example. Personally, I like its UI, and while it has a developer-driven swiss-army knife design vibe, I still like it and have used a wide range of its many options. I haven’t tried Blombooru and can’t see many screenshot samples so I can’t assume what specific issues OP has and how Blombooru solved them.























Perhaps even hockey with referees replaced by boxing refs. (yes, it’s impossible to find that video without loud music)