React Final Form: A library for more performant forms

React Final Form is a lightweight and efficient form management library for React, utilizing the observer design pattern to minimize unnecessary re-rendering by only updating subscribed fields. With a minimal bundle size of 3.2kB and zero dependencies, it offers high performance and simplicity, making it suitable for large, complex forms without compromising speed. Compared to a similar library, Formik, React Final Form is smaller in size and focuses more on modular design and efficient state management. While Formik has a larger community and higher popularity, React Final Form's approach to form handling through subscription props provides a performance edge, especially in scenarios where form complexity leads to potential rendering lags. Both libraries offer similar validation mechanisms, but React Final Form's efficient rendering makes it a compelling choice for developers focusing on performance in React applications.