Samir Manjiyani

Mohammed Salman Khan

Add your custom CSS or javascript/jquery using “Custom WP CSS & JS” plugin to any theme without creating any extra CSS or JS files.
Benefits of Plugin 
* Easy to use. 
* Option to select placement (header or footer) to insert your custom JS. 
* Built with Syntax Code Highlighter. 
* Option to add custom CSS for WP Dashboard.
For Syntax Code Highlighter credits goes to <a href="https://codemirror.net/5/" rel="nofollow ugc">codemirror.net</a>

Custom WP CSS & JS

otimo

A lightweight plugin to add custom CSS, JS/Javascript to any theme. This plugin also gives you an ability to insert JS in header or footer.

sethlivingston

Inject JavaScript and CSS files into your website without having to know the details of the underlying HTML. Paste the 
URLs to external files into the WordPress Admin Settings, and Scripts and Styles will create and insert <script> 
and <link> tags for you.
Banner image by JD Hancock (https://flic.kr/p/cTn6M9)

Scripts and Styles

Inject JavaScript and CSS files into your website. Encourages best practices for performance and compatibility.

Custom WP CSS & JS vs Scripts and Styles