How to Defer parsing JavaScript to reduce blocking of page rendering.?

[darb]

Hi

do anyone know how to Defer parsing JavaScript to reduce blocking of a Joomla page for rendering rendering? Any tips appreciated though I got this implications from testing a site https://gtmetrix.com/

[lextech]

You need to NOT load js above the fold as google says. Simply use async loading for js scripts, plenty of snippets on google for this, as this is not strictly a Joomla problem.

[stormbyte]

You can use JCH optimize extension you've inside many options and you can defer the JS also. Check GTMETRIX before JCH then after, you'll see the difference!

[darb]

You can use JCH optimize extension you've inside many options and you can defer the JS also. Check GTMETRIX before JCH then after, you'll see the difference!

Seems not working with JCH though https://www.jch-optimize.net/forum/trou ... etrix.html

[stormbyte]

no don't worry it's working fine! your link is showing a user having some trouble many coming from 3rd party extensions.

I'm using it on my website https://www.akaoma.com and there's absolutely no problem since years now! You can check the HTML code with defer option activated on the required lines.

Hope it helps!

[the apprentice]

It's been a while since these advices, still best solutions either using Async and Defer or JCH optimize? At the moment I'm trying the Javascript Async & Defer plugin, let's hope it speeds things up improving parsing and reducing blocking.

[leolam]

JCH works as a charm on our own websites. Btw I would use Google Insight for the speedtest. Gives a better picture imho https://developers.google.com/speed/pagespeed/insights/

Leo

[the apprentice]

I would use Google Insight for the speedtest. Gives a better picture imho https://developers.google.com/speed/pagespeed/insights/

This speed test gives appalling results compared to others, is it only me?