Tags are often used to build up documents in TiddlyWiki, with one tiddler becoming the tag for another. Here I refer to those tags as structural tags – tags that convey the relationship between a few tiddlers, but not the meta data. The problem with this approach is that tags created this way are often long, and are typically used only once. This makes it harder to use tags for their original purpose – conveying and encoding meta data.
This plugin allows you to reduce the display size of specified tags or hide them completely. Also provides a drop-down to filter tags that you see in the edit bar. You can create your own filters to hide different kinds of tag (e.g. Tags related to two different kinds of topics)
Note that you need to activate it, and should also deactivate it if you decide to uninstall. As always, be sure to make a backup of any tiddlywiki file that you want to keep!