digitalapps

This plugins detects all of the styles queued via wp_enqueue_style. Contents of each css file are copied and stored in a single css file. This file is loaded on the frontend. The plugin wp_dequeue_style and wp_deregister_style all other css files. The result is your website only makes one single http request to load css styling. Bonus feature the contents of the css file are minified.
Simply flip the switch and the plugin will do the rest.
NOTE: I have only tested this plugin on my own sites running the AdSense Theme. If you encounter a problem with this plugin please let me know. I will be able to help you.

WP CSS Merge

This plugins detects all of the styles queued via wp_enqueue_style. Contents of each css file are copied and stored in a single css file.

serverpars

Crafted with 💙 by the programmers and developers at Pars.host, pars-optimizer is programmed to significantly enhance your website’s load speed, ensuring a seamless and faster user experience. Say goodbye to slow loading times!
pars-optimizer is not just a speed plugin; it’s a complete toolkit for WordPress efficiency. It combines security features, performance optimizations, and UI enhancements in one lightweight package.
<h3>Key Features:</h3>
🚀 Performance & Speed 
* Minify CSS & JS: Compress your style and script files to reduce size. 
* Merge Assets: Combine multiple CSS/JS files into one to reduce HTTP requests. 
* Lazy Load: Built-in lazy loading for Images and Iframes to speed up initial page load. 
* Remove Comments: Automatically strips HTML comments from your source code. 
* Preload Resources: Easily define critical assets (fonts, CSS, JS) to preload for better Core Web Vitals.
🛡️ Security Enhancements 
* Hide Login URL: Change your default <code>wp-admin</code> and <code>wp-login.php</code> to a custom slug (e.g., <code>/my-login</code>) to prevent brute-force attacks. 
* Force SSL: Enforce HTTPS redirection for both the admin dashboard and the frontend.
🛒 WooCommerce Optimization 
* Disable Tracking: Stop WooCommerce from tracking usage data to speed up your backend.
🎨 Admin Interface & Fonts 
* Persian Font (Yekan Bakh): Beautiful “Yekan Bakh” font integration for both the Admin Dashboard and Frontend. 
* Modern Admin Theme: A sleek, dark/modern theme for the WordPress dashboard to improve the management experience.

pars-optimizer

pars-optimizer is a comprehensive optimization plugin designed to speed up your website, enhance security, and beautify your WordPress admin panel.

WP CSS Merge vs pars-optimizer