How to optimize WordPress website speed without plugins?

Hello there,
we have a website https://cljewellery.com.au/ designed in WordPress. We want to optimize its speed manually instead of using plugins that may slow down the website further. Can anyone tell us the code to do the speed optimization manually, please?
thank you :slight_smile:

nope, simply select a blank site and simply embed your blog deployed by GitHub Pages, it’s so fast really because it is static, I did that using blogger.com,

https://xdvrx1.blogspot.com/

I am just using the iframe tag to embed my content deployed by GitHub Pages.

I tried wix just yesterday but it is too slow if you just simply need to post your content without much hassle, so I deleted my account and use blogger.com

A few plugins will not affect the slowness of your website at all. I have a website
designed in Wordpress too and it has no issues with speed even though we have installed many plugins.