I think cmsjunkie and JBD work with some pre-load?
See this article from Mozilla how it can work
developer.mozilla.org/en-US/docs/Web/HTML/Preloading_content
I would like to use Javascript Async & Defer also that could improve speed like this free great Joomla plg www.daycounts.com/shop/free-stuff/javascript-async-defer
what you think is there any improvement and small update possible without this plg ? Thks.
And dont forget the 3.10 backports
https://docs.joomla.org/J3.x:Joomla_3.10_Backports
I suggest you the JCHOptmize Plugin, is a good choice (and have a free plan). I use it in my website
I also use system plugins like JCH Optimze the pro version too and JOT cache plus + webserver cache and http2 Server Push +XT Adaptive Images Pro + DJ Web. And latest SP Pagebuilder Pro with support for WebP
All working well and good with latest Joomla and JBD but its a lot of settings :)
ssnobben did using JotCache and DJWeb allow you to have Jbusiness pages serve up webp images? I've seen a few things on using a few combinations and trying to figure out how to get JBusiness listings to show webp images since it won't let you load it into a listing directly.