Plugin "WP Optimize Speed By xTraffic" speed up WordPress site and increase website's Google PageSpeed Insights point.
Use reSmush.it Image Optimizer for FREE to optimize your pictures file sizes. Improve your performances by using reSmush.it, the Billion images API op
The smallest cache plugin ever released (but still greatly efficient).
Faster CSS browser rendering displaying selected fragments of your theme stylesheet file directly into the head section.
Split (A/B) test multiple titles for a post and discover which gets more page views. Great way to increase click through rates.
Optimize your WordPress database tables with one click.
WordPress Instant Articles dramatically improves user experience and site speed with page pre-render, DNS prefetch, Link Prefetch, HTML5 subresource
A wordpress plugin for using all caches on varnish, nginx, php-fpm stack with php-apc. This plugin includes db-cache-reloaded-fix for dbcache.
Converts gettext binary message catalogs to an array of strings.
Boost WordPress performance: Faster localization, (on the fly) dynamic image resizing and CDN support for images.
Note: This plugin is no longer under active development. If you're interested in maintaining it, please contact me.
A/B Testing, conversion rate optimization, and beautiful Heatmaps specifically designed for WordPress.
A WordPress plugin to merge and compress the CSS and JS links on the page.
Build your audience with content recommendations that are related, trending, evergreen and personalized. Editorial control and machine learning.
Cleaning your site, Improves your Page Speed Grades for Google Insights, GT Metrix and Pingdom Tools. Reduces Loading Time removing unnecessary code.
Replace WP smilies (emoticons) to pretty dynamic one. Automaticaly add smiley block to comment form and in visual/HTML editor on admin. You can set yo
WordPress Varnish Cache 3.x/4.x integration
Adds Facebook OpenGraph Meta Tags to head for a better social sharing experience.
Control additional WordPress, SEO and Database features with this swiss army knife for WordPress.
Easy to use XML & HTML sitemap generator and robots editor.
Slim down the HTML code of WordPress menus to only the CSS classes and ID attributes your theme needs to improve page speed
SEO TextOptimizer is the first tool that helps you improve the quality of content from a search engine perspective. Try it. You’ll be blown away.
This plugin speeds up your site by minifying and caching JS & CSS files. It also fixes a number of issues, replacing multiple plugins.
An addon for BWP Minify plugin that can defer CSS load dynamically from the footer of the page.
Boost your WordPres blog speed with optimized and progressive images !
SEO Audit by ContentLook gives you a thorough report of your whole Content Marketing activity: SEO, blogging, authority, social, etc.
Falcon is a minimalist WordPress plugin which cleans up your website and optimizes it for best performance.
Internal links to posts, custom-type posts, pages, categories and tags with any HTML attribute(s).