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React SEO & it’s Optimization Practices

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Brian Burell
React SEO & it’s Optimization Practices

React is designed to create interactive modular and cross-platform interactive user interfaces. Currently, it is a very much popular JavaScript framework for writing effective front-end applications. Originally developed for writing single-page applications (SPAs), React is now used to create complete websites and mobile apps.

If you have experience in web development and you switch to React, you will find that your HTML and CSS code is increasingly converting to JavaScript. This is because React doesn't recommend creating or updating UI elements directly but rather describing the "state" of the user interface. React then updates the DOM to match the state in the most efficient way possible.

Therefore, any changes to the user interface or DOM must be made through the React engine. While this is convenient for developers, it can have longer loading times for end-users and more indexing tasks for search engines.

In this article, we'll look at the challenges you face in building SEO-optimized React apps and websites and outline strategies you can use to overcome them.

Google gets over 90% of entire online searches. Let's understand via pointers about its crawling and indexing process.

  1. Googlebot maintains a crawl queue that contains all URLs that need to be crawled and indexed in the future.
  2. When the crawler is idle, it picks up the next URL in the queue, requests it, and receives the HTML.
  3. After analyzing the HTML, Googlebot determines whether it needs to fetch and execute JavaScript to render the content. If yes, the URL is added to the render queue.
  4. Other times, the renderer fetch and run JavaScript to display the page. This sends the rendered HTML back to the CPU.
  5. The processing unit takes all the <a> tags URLs mentioned on the website and adds them to the crawl queue.
  6. The content will be added to the Google index.

Note that there is a clear difference between the processing step that parses the HTML and the renderer which executes the JavaScript.

This distinction is made because JavaScript is costly to implement, given that Google bots must display more than 130 trillion web pages, according to the search engine land. When Googlebot crawls a web page, it immediately parses the HTML and then queues the JavaScript. The Google documentation says that the page stays in the view queue for a few seconds, although it could be longer.

Also, it is worth mentioning the concept of crawl budget. Google crawling is limited by bandwidth, time, and availability. It is based on Googlebot instances. It allocates a certain budget or indexing resources for each website. If you create a large, content-rich website with thousands of pages (such as an ecommerce website) and those pages use a lot of JavaScript to display the content, Google may read less content from your website.

Why is SEO Optimization for React Challenging?

Software developers need to identify potential problems because of search engines while crawling, and indexing React pages.

We will see the closer on what makes React SEO complicated or challenging and what developers can do to overcome this issue:

Empty content of the First pass:

React applications trust mostly JavaScript and often have trouble with search engines. This is because React uses a standard application shell model. The original HTML contains no meaningful content, and the user or bot must run JavaScript to display the actual page content.

This approach means that Googlebot will find a blank page the first time it switches. Content is only visible to Google when the page is displayed. This slows down content indexing when you are working with thousands of pages.

To know more - https://katalysttechnologies.weebly.com/blog/react-seo-its-optimization-practices

 
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