Hi Nicholas,
#1. Let me back track to where this issued started.
I got stuck at Joomla 3 php 7.4 because I built my website network using sh404sef since Joomla 1.5 linking thousands of urls over dozens of websites well Weeblr finally created an importer for the urls from sh404sef to 4SEF which is Joomla 4 compatible.
So in this nightmare process I'm working with Samuel at JCH Optimize to get my websites to run faster and he said: - " I've optimized the images, and the WEBP formats are enabled, but they're generating a 403 error on the site. Your server or some extension is blocking these. Check Admin Tools. It could be this component that's preventing them, so just configure it to allow WEBPs, then enable the load WEBP feature."
My dedicated server is using Ubuntu 18.04.6 with Plesk. - " The GD library shipped with Plesk PHP 7.2 and higher supports WebP starting from Plesk Obsidian 18.0.27."
Figuring it wasn't a server issue I moved on to Admin Tools and found https://www.akeeba.com/support/admin-tools/32855-webp-and-htaccess.html which looked like the configuring the .htaccess file correctly might solve the issue.
#2. A couple years ago I tried to use NginX Configuration Maker but I couldn't get it to work with my server. Do you recommend using the NginX Configuration Maker for better website loading speeds?