JavaScript SEO: The Complete Guide
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Getting Google to index JavaScript content is one of the more typical technical SEO difficulties that SEOs confront. JavaScript is becoming more widely used on the internet. Many websites have struggled to expand organically as a result of ignoring the value of JavaScript SEO.
Working on sites built using JavaScript frameworks (such as React, Angular, or Vue.js) will obviously present distinct issues than working on sites built with WordPress, Shopify, or other popular CMS platforms.
To achieve search engine success, you must understand how to examine whether your site’s pages can be displayed and indexed, discover flaws, and make it search engine friendly.
We’ll teach you all you need to know about JavaScript SEO in this guide. We’ll look at the following in particular:
What Is JavaScript?
JavaScript (or JS) is a webpage programming (or scripting) language.
In summary, JavaScript works in conjunction with HTML and CSS to provide interaction that would otherwise be impossible. Animated visuals and sliders, interactive forms, maps, web-based games, and other interactive elements are common on most websites.
However, it’s becoming more usual to build complete websites with JavaScript frameworks like React or Angular, which can power both mobile and online apps. The fact that these frameworks may be used to create both single-page and multi-page web applications has increased their popularity among developers.
However, employing JavaScript, as well as other frameworks, poses a number of SEO issues. We’ll look at these in more detail later.
What Is JavaScript SEO?
JavaScript SEO is a type of technical SEO that includes making JavaScript easy to crawl and index for search engines.
SEO for JavaScript sites has its own set of problems and procedures to follow in order to increase your chances of ranking by allowing search engines to index your web pages.
When working with JavaScript webpages, though, it’s simple to make typical blunders. To guarantee that everything is done right, there will be a lot more back-and-forth with coders.
However, JavaScript is becoming more widespread, and learning how to properly optimise these sites is a crucial skill for SEOs to acquire.
- Crawling
- Rendering
- Indexing
You can see this process visualized in more detail below:
Let’s take a closer look at this procedure and compare it to how Googlebot scans an HTML page.
It’s a quick and easy procedure that begins with downloading an HTML file, extracting links, and downloading CSS files before sending these resources to Caffeine, Google’s indexer. The page is then indexed by caffeine.
The procedure begins with the HTML file being downloaded, just as it does with an HTML page. Then JavaScript generates the links, but they cannot be removed in the same way. As a result, Googlebot must first download the page’s CSS and JS files before indexing the content using Caffeine’s Web Rendering Service. The WRS can then index and extract linkages from the material.
And the fact is that this is a time-consuming process that takes more time and resources than creating an HTML page, and Google cannot index material until JavaScript is produced.
Crawling an HTML site is quick and easy: Googlebot downloads the HTML, then extracts and crawls the links on the page. When it comes to JavaScript, however, this is not possible because it must be displayed before links can be retrieved.
Let’s look at some strategies to make the JavaScript content on your website SEO friendly.
How to Make JavaScript Content on Your Website SEO-Friendly
To index your website, Google must be able to crawl and render its JavaScript. However, it’s fairly rare to run into roadblocks that impede this.
However, there are numerous measures you can do to ensure that your website’s JavaScript is SEO friendly and that your content is being displayed and indexed.
And really, it comes down to three things:
- Making sure Google can crawl your website’s content
- Making sure Google can render your website’s content
- Making sure Google can index your website’s content
There are actions you can take to ensure that these things happen, as well as techniques to make JavaScript content more search engine friendly.
The Most Common Causes of Google’s Inability to Index JavaScript Content
Many factors might be at play if Google is unable to index your JavaScript content, including:
- In the first instance, the material cannot be displayed.
- Due to links to it being generated by JavaScript on a click, the URL cannot be found.
- While Google indexes the material, the page times out.
- The JS resources do not affect the page sufficiently to merit being downloaded, according to Google.
The Most Common JavaScript SEO Problems and How to Fix Them
It’s not rare to run into SEO difficulties as a result of JavaScript, and we’ve listed a few of the more prevalent ones below, along with advice on how to avoid them.
- Blocking.js files in your robots.txt file will prohibit Googlebot from crawling, rendering, and indexing these sites. Allow these files to be crawled in order to avoid problems.
- Google doesn’t usually wait long for JavaScript content to render, and if it does, you can notice that your content isn’t indexed due to a timeout problem.
- Because search engines do not click buttons, setting up pagination where connections to pages beyond the first (let’s say on an eCommerce category) are only produced with a on click event (clicks) will result in these subsequent pages not being indexed. Always utilise static links to aid Googlebot in finding your site’s pages.
- When using JavaScript to lazy load a website, make sure not to postpone the loading of material that needs to be indexed. This is often reserved for photos rather than words.
- rendered on the client’s end In the same manner that server-side produced content can return server errors, JavaScript can’t. For example, redirect errors to a website that produces a 404 status code.
- Rather of utilising #, make sure that static URLs are produced for your site’s web pages. That means your URLs should look something like this (yourdomain.com/web-page) rather than something like this (yourdomain.com/#/web-page) or this (yourdomain.com#web-page). Static URLs should be used. Otherwise, Google will not index these pages since hashes are often ignored.
Conclusion:
At the end of the day, there’s no denying that JavaScript can cause problems for crawling and indexing your website’s content. Still, by understanding why this is and knowing the best way of working with content generated in this way, you can massively reduce these issues.
It takes time to get to grips with JavaScript fully, but even as Google gets better at indexing it, there’s a distinct need to build up your knowledge and expertise of overcoming the problems you might face.