Forms in React have historically been painful, often requiring heavy libraries like Formik or Redux-Form that trigger full component re-renders on every single keystroke. React Hook Form revolutionized this by leaning into uncontrolled components and leveraging HTML5 validation APIs. By using `ref` to register inputs, React Hook Form isolates re-renders to only the exact moment an error occurs, resulting in buttery smooth performance even on massive, complex forms with hundreds of fields.
It integrates flawlessly with schema validation libraries like Zod or Yup, allowing you to define complex validation logic outside of your component. The API is remarkably small and elegant, primarily revolving around the `useForm` hook. If you are building forms in React today, React Hook Form combined with Zod is the definitive best practice.