Both are popular JS frameworks used for frontend of a website. But, both varies in in their approach to achieving efficient and effective UI rendering.
Some differences which might help us decide between them :
React's component-based architecture makes it easy to reuse components across different parts of an application, which can help to reduce development time and improve code maintainability.
React has a larger and more established ecosystem compared to Svelte, which means that there are more third-party libraries, tools, and resources available for React. This can make it easier to find solutions to common problems and to integrate React with other technologies.
Svelte's template-based syntax is simpler and more intuitive than React's JSX syntax, which can make it easier for developers to learn and work with Svelte.
While Svelte has its own built-in state management system, React's state management libraries like Redux have been widely adopted and used by many developers. This means that there are more resources available for learning and using these libraries with React.
Svelte's compilation approach allows it to generate highly optimized code that can run faster than React's runtime interpretation.
Above mentioned points can help us decide between the two technologies. On seeing our requirements, React might be better due to library support, reusability, tools.