No. By default, many ReactJS applications use client-side rendering (CSR) where the page loads first and content appears as the application runs in the browser. This works well for the user experience but can make it harder for search engines to immediately see page content if not handled properly. This is where server-side rendering (SSR) comes in. Frameworks like Next.js, built on top of ReactJS, render pages on the server before they reach the user or search engine. As a result, content is available immediately which makes it easier for search engines to crawl, index and rank pages.