Navigate up one level (directory). It will remove an in-page anchor, the querystring, the file, and the last directory in that order, whichever is first found...
What is Uppity?
"Uppity" is a Firefox add-on designed to enhance and simplify your browsing experience. This unique tool gives users the ability to quickly navigate up one level in a directory, eliminating tedious steps. The add-on intelligently removes in-page anchors, querystrings, files, and the last directory—whichever is first encountered. Also, Yyou can easily move up one level by clicking the add-on's button on your toolbar or by using the keyboard shortcut Alt-Up. This logical navigation system is designed to make browsing quicker and more efficient.
Clicking the button on the toolbar will move up one logical level. The keyboard shortcut Alt-Up will also navigate this way.
Uppity may not be safe to use and it requires some risky permissions. Exercise caution when installing this add-on. Review carefully before installing.
Uppity has earned a fairly good reputation and likely can be trusted.