Why React Websites Can Struggle With SEO
React has become one of the most popular ways to build websites and web apps. A lot of modern sites use it because it makes building fast and interactive interfaces much easier for developers. The problem is that React websites can sometimes run into SEO issues if they aren’t set up properly.
Over the years I’ve looked at quite a few React sites that struggled to rank, and the funny thing is that most of the time the issue isn’t the content or the keywords. The problem is simply how the website loads its content.
React often relies heavily on JavaScript, and that can make things a little harder for search engines to crawl and understand if it isn’t implemented carefully.
The good news is that React websites can rank perfectly well in Google. You just need to make sure a few important things are set up correctly.
Below are some simple things that help React websites perform better in search results.
Make Sure Google Can See Your Content
One of the biggest issues with React sites is that content sometimes isn’t present in the original HTML of the page.
Instead, the page loads a basic structure and React fills the rest of the content in after the JavaScript runs.
For visitors this works fine because browsers handle JavaScript easily. But search engines first crawl the page before rendering scripts.
If your important content only appears after JavaScript runs, search engines may initially see a page that looks almost empty.
One quick thing I usually do when checking a React site is open View Page Source and search for some of the page text. If the content isn’t there, it means the page relies on JavaScript rendering.
That doesn’t automatically mean the site is broken for SEO, but it’s something worth checking carefully.
Consider Server-Side Rendering
One common solution for React SEO is server-side rendering (SSR).
With SSR, the server generates the HTML first and sends a fully rendered page to the browser. That means search engines can immediately see the content without needing to run JavaScript first.
Frameworks like Next.js make this much easier because they support server-side rendering out of the box.
If your site relies heavily on React and SEO is important, using server-side rendering can make a big difference.
Make Sure Internal Links Are Crawlable
Another thing I see quite often is navigation that relies too much on JavaScript.
Sometimes React apps generate navigation dynamically or use buttons instead of proper links.
Search engines are much better at following normal HTML links than JavaScript actions.
If possible, always make sure your navigation uses standard <a> links so crawlers can easily discover your pages.
This helps Google find new content and understand the structure of your site.
Check Your Site With a JavaScript Crawler
One thing I always recommend when working with React websites is testing how the site looks before and after JavaScript rendering.
This is where a crawler that supports JavaScript rendering becomes really useful.
Personally, I like to run a crawl first using the raw HTML and then run another crawl with JavaScript rendering enabled. Comparing the two usually reveals if content, links, or metadata only appear after scripts run.
One tool that works well for Javascript crawling is CrawlRhino SEO Crawler.
It lets you crawl pages and enable JavaScript rendering so the crawler loads the page like a browser would. I’ve found this really helpful when checking React sites because it quickly shows whether the content is visible to crawlers.
Sometimes the difference between the normal crawl and the rendered crawl is quite surprising.
Avoid Hiding Metadata Behind JavaScript
Another small issue I’ve seen on React sites is metadata being added dynamically.
Things like:
- page titles
- meta descriptions
- canonical tags
If these are added after the page loads, search engines may not always pick them up correctly.
Ideally, important metadata should already be present in the HTML that gets sent to the browser.
This makes it easier for search engines to understand what the page is about.
Keep JavaScript as Lightweight as Possible
React sites can sometimes load quite a lot of JavaScript, especially if multiple libraries are being used.
Large scripts can slow down page load time, which affects both user experience and SEO.
Keeping JavaScript bundles as small as possible and avoiding unnecessary scripts helps improve performance.
Fast pages tend to perform better overall.
Test How Search Engines See Your Website
One thing I’ve learned over time is that it’s very easy to assume everything is fine just because the website works in a browser.
But what users see and what crawlers see can sometimes be different.
That’s why I like to test websites with a crawler that supports JavaScript rendering.
Running a crawl across your site and comparing the results gives you a much clearer idea of how search engines might interpret your pages.
Tools like CrawlRhino SEO Crawler make this quite straightforward because you can crawl pages normally and then run another crawl with JavaScript rendering enabled.
It’s one of the quickest ways to spot hidden SEO problems on React websites.
Final Thoughts
React websites can absolutely rank well in Google, but they do require a little extra attention when it comes to SEO.
Making sure your content is visible, your links are crawlable, and your pages can be rendered properly goes a long way toward avoiding common problems.
From my experience, the best approach is simply testing how your website behaves when crawled. Once you understand how your pages appear before and after JavaScript runs, it becomes much easier to fix potential SEO issues.
If you run a React website and haven’t tested it yet, it’s definitely worth crawling a few pages and seeing what the rendered version of your site looks like.
Sometimes that small check can reveal issues that are very easy to fix but could have a big impact on rankings.