Below is a step by step guide to installing and activating the Spark Content Optimizer Plugin for Chrome. For more information on the plugin analysis rules click here.

Requirements
This plug-in is a Google Chrome Extension and requires the Google Chrome browser. Please have Chrome installed and opened in order to install the Plugin.
1) On the Chrome Store page, click on the blue Free button
Install the Plug-in

2) In the pop-up that appears, select Add Extension. This will add the plugin to your browser.
Activate the Plug-in
3) After adding the plugin to Chrome, the Spark logo will appear in the top right of the browser next to the Settings icon and any other icons for plugins that you may have.

4) Click the Spark Logo with any live web page loaded.
5) You have the option of activating with Google (any Email address that is associated with a Gmail account will work), or use a unique Email by entering your name and email address.

6) Once you've activated the plugin using your preferred method you will see a success message and then be redirected to the activated plugin.

Summary
Congratulations! You have successfully installed the Spark Content Optimizer and you will now be able to do on-the-fly analysis of any website that you are currently viewing. This plugin gives you some primary components of the seoClarity app with even more ease.
NOTE: Some security settings, such as firewalls, other extensions or the like, can restrict the ability for Spark to retrieve some data points. This can be validated by viewing the Console tab when inspecting a page in Chrome. If spark.seoclarity.net resources are shown as blocked, this is likely do to a security setting on the machine or network being utilized.