GraphQL fragments are a powerful tool in building safer, cleaner, and faster GraphQL applications. By using fragments to declare the data dependencies of child components, developers can separate concerns between parent and child components, making it easier to maintain complex UI code. Fragments also allow for automatic type generation, reducing duplication of code and preventing bugs at build-time. Additionally, fragments enable developers to make a single query to fetch data for multiple components at once, reducing the need for repeated round-trips to the server. By leveraging GraphQL fragments, developers can create more scalable and maintainable applications.