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Deferring JavaScript for Magento 2 by only 1 step
Although Magento 2 already supports required JavaScript that helps to improve site performance, there is additional way to speed up more quickly and simply called deferring JavaScript.
+ Delay JavaScript loading until the browser finishes loading HTML and CSS
Attachment 10195
+ Support deferring Iframes effectively in case the websites have embed external JavaScript
+ Reduce loading time and improve site speed as well as page ranking on Search Engine Result Pages
Check it out for FREE Installation - FREE 1-year Support and FREE Updates!