Wikipedia:AutoEd

Warning: You take full responsibility for any action you perform using AutoEd. You must understand Wikipedia policies and use this tool within these policies, or risk being blocked from editing.

AutoEd (source) is a user script that helps to automatically make certain changes in articles. It also allows for easy design, use, and customization of user scripts related to automated article cleanup. It is based on CodeFixer, Plastikspork's script, and Formatter, but allows for further customization and the easier creation of new functions. It is currently maintained primarily by Plastikspork.

AutoEd should not be used to make edits that only remove whitespace or that make no change in the actual appearance of the article. Exceptions exist, such as fixes for syntax errors or removal of invisible characters; see WP:COSMETICBOT for details and links.