Frequently Asked Questions
JavaScript
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Why should I remove unused JavaScript?
The more JavaScript you serve, the more time it takes for a browser to parse and compile it and the more memory it will consume. By removing any unnecessary JavaScript files used on the site, you stop them from reducing your overall page speed scores and from using up your site’s crawl budget.
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Does JavaScript affect SEO?
JavaScript can be used on a page without having a profound impact on SEO performance. The problem lies when implementing JavaScript whilst using client-side HTML rendering, as this can seriously slow down page loading times. Since Google’s crawlers can work very fast, these pages will appear empty until JavaScript is loaded and run, making the content inaccessible.