Wookieepedia's category policy defines the criteria and rules for the creation of categories, and their application to individual articles.
General rules
- Categories must have at least two different articles—excluding the category topic's article—with the exception of the following cases:
- Species
- Starship classes
- Droids by model
- Products by company (both IU and real-world)
- Images and audio files of a particular subject
- Images and audio files from a particular piece of media
- Images and audio files by a particular creator
- Issues, books, or other media in a particular series
- Categories should reflect a shared attribute of the articles, preferably a single attribute, and intersectionality should be kept to a minimum.
- When an article's shared attribute has a corresponding article, such as Category:Humans and Human, the category description should include a link to both the Canon and Legends articles if they exist, preferably through the use of the {{Main}} template. The attribute articles should not be included in the category themselves, but should instead use the {{RelatedCategories}} template to link to it.
- In general, articles on individual objects or individuals should not be included in the same category as articles on groups, but should instead be placed in their own categories. For example, individual astromech droids are placed in Category:Astromech droids, while specific models of astromech are placed in the Category:Astromech droid models tree.
- In general, an article should only list the most specific categories applicable, and avoid listing both a category and its parent category. For example, Barriss Offee should be listed in Category:Jedi Knights of the Jedi Order, but not in the broader parent category Category:Jedi individuals. This is not a hard and fast rule, however.
- Membership in a small subunit of a larger affiliation does not preclude the listing of the appropriate category for the larger affiliation. (example: ships in Category:Starships of Task Force Vengeance should still list the parent category Category:Starships of the Galactic Empire, as ships in the unit performed other duties)