jefftrotman

This is a very simple WordPress plugin that adds the code needed for Google Analytics to your page. You just need to install the plugin, activate it, and enter your Tracking ID.
Technical Details (in case you are curious, the plugin takes care of this for you)
If your Google Analytics Tracking ID is UA-XXXXXXXX-1, this code needs to be added to your page headers for tracking to occur:


 window.dataLayer = window.dataLayer || []; 
 function gtag(){dataLayer.push(arguments);} 
 gtag(‘js’, new Date());
 gtag(‘config’, ‘UA-XXXXXXXX-1’);
The plugin adds a field to the General Settings page for you to enter your Tracking ID. Activate the plugin, enter your Tracking ID – that’s all you have to do. The code above (with your Tracking ID) will automatically be inserted into the header of each page your readers view.

Technicality Google Analytics

Adds your Google Analytics Tracking ID to your headers.

Aman Verma

Analytics for WP plugin allows you to track your website by entering your google analytics tracking code. It Adds latest version of Google Analytics (Universal Analytics) javascript to every page, post, products(in eCommerce site). Also comes with option to temporaily disable tracking.
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Analytics for WP

This plugin is a perfect replacement for all of the cluttered plugins that dominate this market. If you only need a simple options page and a single field to drop in the tracking code then this plugin is for you.

I suggest the author change his options page menu item placement. It feels better to live under the Settings menu item instead of being a top level item.

Simple and effective

Analytics for WP plugin allows you to track your website by entering your google analytics tracking code.

Technicality Google Analytics vs Analytics for WP