Many people worry that websites built with JavaScript frameworks like React won't show up properly in Google search results. Let me break down how this actually works in simple terms.
The Good News: Google can read and understand JavaScript websites, including React apps. Google's search bot (called Googlebot) uses a modern browser engine that can run JavaScript code.
The Reality Check: It's a bit more complicated than regular websites, but it's definitely not impossible.
Think of Google as a visitor who comes to your website in three steps:
Google's bot visits your website URL
It downloads the basic HTML file
At this point, if your React app hasn't loaded yet, Google might only see a mostly empty page with something like <div id="root"></div>
Google puts your page in a queue to "render" (basically, run your JavaScript)
When it's your turn, Google fires up a browser engine and runs your React code
Now your page loads completely with all content visible
Google reads the fully loaded page
It understands your content and adds it to search results
Step 2 (rendering) doesn't happen immediately
Your page might wait in Google's queue for seconds, hours, or even days
During this wait, Google only knows about the basic HTML shell
Running JavaScript takes more computing power than reading plain HTML
Google has limited resources, so it prioritizes which pages to render
Other search engines or social media bots might not run JavaScript at all
They might only see your empty shell
Your server generates the full HTML before sending it to browsers
Both users and Google get complete content immediately
Frameworks like Next.js make this easier for React
Cons: It costs more tokens to generate SSR website
Pre-build all your pages as complete HTML files
Upload these ready-made files to your server
Everyone gets instant, complete content
Cons: Static site will lose the interactive feature of Java script
Your React website won't be invisible to Google, but it might not be as easily discoverable as a traditional website. The key is understanding that:
Google can read JavaScript on client side rendering - but it takes extra time and effort
Source: https://developers.google.com/search/docs/crawling-indexing/javascript/javascript-seo-basics