by Alberto Reineri on WordPress.org
Simple Header and Footer Plugin let you easily insert code in the header (between and tags) and in the footer (before the tag).

Simple Header and Footer Settings Screenshot
Simple Header and Footer Plugin allows you to add Google Analytics, Facebook Pixel, custom tracking code, and more with a straightforward interface. Avoid installing complex plugins with thousands of unnecessary functionalities
After uploading and activating the plugin is possible to add Header and Footer code like this:
You can contribute to translate this plugin in your language on WordPress Translate
This plugin does not collect or process any personal user data.