Utkarsh Kukreti

This plugin enables embedding of multiple stylesheets and javascript files on a per-post basis.
Multiple file names should be separated by a ‘,’. Extra whitespace after and before a ‘,’ are automatically ignored.
Relative paths to files are automatically prefixed by the /css or /js. These settings can be customized by editing values of the variables $css_folder and $js_folder in the plugin file.
Absolute paths are directly hotlinked.

Include Custom Files

Enables embedding of multiple stylesheets and javascript files on a per-post basis.

johnibom

Welcome to WP Custom CSS JS by PieSolutions. 
So you want to add HTML, CSS, Javascript, Jquery or Tracking Pixel on your Website without messing up with your theme’s files? This small and light weight plugin gives you ability to do that right from the wordpress dashboard.
=Features=
HTML (All tags are supported) in the header Block
Inline CSS in Header
Inline JS/jQuery in Header
HTML (All tags are supported) in the footer Block
Inline CSS in Footer
Inline JS/jQuery in Footer
<h3>LOCALIZATION</h3>
<ul>
<li>We are looking for translators. Please reach out to us and/or translate this plugin to your own language here: https://translate.wordpress.org/projects/wp-plugins/wp-custom-cssjs</li>
</ul>

Custom CSS/JS

WP Custom CSS JS plugin allows you to add any HTML, CSS, Javascript, jQuery or Tracking Pixel easily on your wordpress site right from your dashboard.

Include Custom Files vs Custom CSS/JS