Understanding Site Referrer Policy

Site referrer policy governs what data can be passed between a website visitor's browser and the scripts you've deployed on your pages. There are several site referrer policies to choose from - this article does a great job of outlining them.

In order for Triblio to function properly, our scripts need to be able to read the full URL of the page the website visitor is on. In order to allow this, the site referrer policy should be set to "no-referrer-when-downgrade". For websites where this is already declared in the code, there's no issue. However, as of early September, Google Chrome began rolling out an update that changes the default site referrer the browser sets if the visited website doesn't declare a referrer policy explicitly. Now, the default is "strict-origin-when-cross-origin" which only allows Triblio's scripts to see the domain of the page they're on (as opposed to the full URL including the path).

To set your website's referrer policy to "no-referrer-when-downgrade", log in to your CMS and add this meta tag at the the top of the <head> section of your base template:

<meta name="referrer" content="no-referrer-when-downgrade">

This will ensure that any third-party scripts on the page (such as Triblio's!) can read the full page URL and function properly.

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