User:Ken g6/nara categories tifs only.user
Nara categories tifs only.user.js is a userscript that simplifies categorization of the National Archives and Records Administration images. Some users may be categorizing jpg's, some tif's, and some may be working on some of each. This script finds all jpg entries that match tif entries and hides those jpg's. But first it checks whether the jpg was categorized, and if it was it marks the matching tif as categorized as well.
This process can take a minute or two, so I provided a progress indicator. Don't worry: this user script uses no Wikimedia resources beyond what a normal page load uses. (Well, it loads a spinner gif, but that's it.)
Get the user script, which has been tested in Firefox (with Greasemonkey) and in Chrome, here: