What should be the priority of the snippet?

Our snippet isn't that different than other (maybe third party) snippets: it is only able to collect data from visitors that were patient enough to wait for the page to load.

Just like Google Analytics: if the performance of your website or shop is bad for whatever reason, Google Analytics might actually not even be able to track them. As a result, your bouncerate might look better than it actually is. This already is an incentive to get started with improving your site or shop's performance.

When it comes to our tracking snippet, it's constructed to not be parse or render blocking. As a result, it is save to add it in your head section as well as at the end of the body. When using (Google) Tag Manager, you can use the "All pages" (Page View) trigger, or any of the other triggers (DOM Ready or Window Loaded).

The sooner it is being executed, the more data it will collect.