pug-filters enhances the Pug templating engine by adding custom filters that can be applied to text within your Pug templates. These filters allow you to manipulate text in various ways directly during the rendering process, such as markdown parsing, string transformations, and more. Using pug-filters promotes cleaner and more maintainable Pug code by encapsulating complex text processing logic within reusable filters, simplifying your templates and improving readability.