https://wordpress.org/plugins/async-javascript/
– Async JavaScript > Wizard
– enable – async js
– Go https://gtmetrix.com/api/
– Login gtmetrix -> get api and using – user name and api – it will give you a test score.
– Step 4 ->> Proceed -> is your site is ok : YES > Apply Settings
– Async JavaScript > Settings
– TICK – Enable Async JavaScript?
– TICK – Also enable Async JavaScript for logged in users?
– TICK – Also enable Async JavaScript on cart/ checkout pages?
– Tick -> Enable Autoptimize Support:
– Tick -> jQuery Method: DEFER/ asynnc – which is better ? apply that one
– Save Changes

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