There’s a lot of misinformattion in this thread.
Firstly there’s a toggle to move jquery to the footer in content settings.
Minifying and combining of CSS and JS files is automatic HubSpot does this for you. There are very specific rare circumstances that will cause CSS to not minify, and it has to do with having certain things in your code.
You shouldn’t put script tags in your head, if you need to call a script tag use require_js instead, it will load it in the footer.
Do not use the cut method to remove things from your header and footer includes, that’s not a great idea and prone to breaking your site.
the public common js If i remember correct powers HubSpot’s nav menu js which makes them automatically a11y friendly.
Cutting the layout css you do so at own risk, hubspot modules may not display correct. and the page editor may have problems.
When it comes to images in your HubSpot site, HubSpot actually does a great job at compressing the images for you.
If images are embeded not as img elements but as backgrounds then you should be using the resize_image_url function. That way Marketers can’t make a 16000px wide image appear on the site slowing it down to a crawl.
If you want to test how moving jquery to the footer will affect your site, as well as test your google page speed I have a chrome extension that will help you with that
@giozua I think you’re in the wrong place then. This is the CMS forum, as in the HubSpot CMS.