From Meta, a Wikimedia project coordination wiki

CatScan [1] is a tool written by Duesentrieb for searching categories recursively, for intersection with other categories, templates, stubs, recent changes, etc. See User:Duesentrieb/Tools for other tools I wrote.

Please use the talk page for questions and comments. If I do not respond, please leave a quick note on my talk page at the german wikipedia.


The help page is available in English on meta, CatScan.

A short manual is available in German, see de:Wikipedia:CatScan

To Do[edit]

  • Use CategorySelector
  • Link to MediaSearch
  • WikiText Output
  • RSS feed for RC
  • Wanted pages (red links)
  • Intersect / difference with List, exclude categories from search.
  • Articles larger than x
  • stub-filter for all modes (?)
  • Tree-Like output (?)
  • show "external" categories, filter by has/has no external cats
  • "upward" scan (?)
  • show anon edits only in RC
  • search for missing interwikis (other tool?)
  • include tags/categories on associated talk page
  • at some point, split it to multiple front ends!
  • strip duplicates from output - see [3] for example (anatom, etc)
  • Search for articles that have (not) been edited since X


  • Category Cloud
  • Category Weight
  • TreeMap?....


This program has an internationalized user interface. If you like, you can help to improve it:

  • to request a language to be added, add an entry in the list below. Translations are kept on separate pages, with the same name as this page with the language code appended (see existing entries). Then please try to find someone who could provide the translation and point him/her here.
  • to add a translation, do as above, and copy an existing translation to the page for the language you are providing. Then translate the messages. When you have done that, please drop a note on my talk page.

NOTE: if you provide an interface translation, you must grant me permission to use it under the terms of the GPL, as well as the GFDL! please put a copyright notice to that effect at the top of the translation you are providing!