neoslab

<p>Powered Minifier allow you to reduce your page load and increase your performance by minifying your HTML source along with all the CSS and JS code present in your markup.</p>
<h3>License</h3>
<p>Good news, this plugin is free for everyone! Since it’s released under the GPL, you can use it free of charge on your personal or commercial site.</p>


Powered Minifier

Honestly it's the best minifier plugin for Wordpress 

Simply Excellent

Reduce your page load by minifying your HTML source along with all the CSS and JS code present in your markup.

sakaitaka

<p>Compress HTML Code, And Converting Inline Script and Style To JavaScript and CSS Compressed File.</p>


WP Fast Minify

This is a simple plugin that cleans up the code. I myself use it on various sites.

The simple plugin that cleans up the code

Compress HTML Code, And Converting Inline Script and Style To JavaScript and CSS Compressed File.

Powered Minifier vs WP Fast Minify