vic-m

JShrink minifier implemented for WordPress. Combines footer scripts equeued by wp_enqueue_script into a single minified js file. Check the FAQ section for more info about the plugin.
Important note: only footer scripts which are equeued by wp_enqueue_script with the fifth parameter set to ‘true’ are minified by this plugin.
JShrink is a php class that minifies javascript so that it can be delivered to the client quicker. Check https://github.com/tedious/JShrink for more info.
Works for sure with: WordPress 4.0+, PHP 5.4+.

WP-JSHRINK

JShrink minifier implemented for WordPress. Combines footer scripts equeued by wp_enqueue_script into a single minified js file.

sakaitaka

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

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.

WP-JSHRINK vs WP Fast Minify