AutoEditPages

AutoEditPages can automatically append or prepend the same categories on many pages that you can add by categories. This script adds a button in "My Tools" in your user bar at the bottom of the screen and a button in your user drop-down menu, when you hover your avatar at the top of the script. Even if edit are marked at minor, it is strongly recommended to have a bot flag when you use this script, especially if the number of pages is big because it can flood the wiki activity and the wiki. Use it carefully and ask local administrators agreement before use it.

Features
You can all pages from a category directly from the form, to do this, type in the last input the name of the category and clicked on "Add pages from the category". All the pages of this category will be automatically add to the "Pages" text-area. Note : The script made 10 edits per second, so if you have many pages, it can take several seconds.