A simple Google Analytics snippet, based on David Kuennen Minimal Analytics (version 2018-12-16 16:49).

Faster CSS browser rendering displaying selected fragments of your theme stylesheet file directly into the head section.

WP Classic Setup: Removes WP version, dashicons, oEmbed, Jquery Migrate, XMLRPC. Set Http security headers, heartbeat to 60s, Post revisions to 1, disable Plugins&Theme editor, etc.

An addon for BWP Minify plugin that can defer CSS load dynamically from the footer of the page.

This plugin modify the url of the images to speed up the page browsing.

Supported features:

See how your site performance varies with user's location, browser, device and pages being browsed. Find how it's affecting your business.

This plugin adds the prev/next meta tag to our blog header.

Automatically add title and alt tags to any new image uploaded to you the media library. This will improve your SEO and save you time while following the accsessibility guidelines. This light plugin will not affect your site performance at all.

Supported features:

Web Page Speed Checker is a plugin designed to control the Google Page Speed Score of your blog pages.

Load your web pages as fast as apache will allow with WP Fast Cache.

Add new quick links to check WPO / WebPerf in your published posts, pages and terms. You'll test your website contents with PageSpeed, GtMetrix and so on

Some tricks and tips to rock our website. Depends on WP Rocket plugin. Adjust some options and improve Core Web Vitals score on Page Speed Insights.

WPO Optimizations, Improvements and Tweaks to Speed Up WordPress