Setup guide

Install the Tag 📦

To install the JavaScript SDK on your site, simply copy and paste the following lines into each page of your website. These lines can be inserted at the end of the tag or via a tag management system (TMS) such as Commander Act or Google Tag Manager.

<script>
(function(v,easy,bl) {
    v = easy.createElement("script");
    v.type = "text/javascript";
    v.async = true;
    v.src = bl;
    (easy.head || easy.body).appendChild(v);
})(this, document, "//m.vzbl.eu/js/[retailer].js")
</script>

You should replace [retailer] with your retailer code

This method ensures that the tag execution does not block the loading of other page elements, thus minimizing the impact on the overall performance of the site. ⌛

Content-Security-Policy

If your site uses a Content Security Policy (CSP) to enhance its security, it is necessary to add the sources used by our tag to the list of allowed sources in your CSP. The required configuration includes allowing script loading via the unsafe-inline directive.

script-src 'unsafe-inline' https://*.vzbl.eu

We use XMLHttpRequest and the Beacon API to transmit data to our servers. Therefore, it is necessary to authorize our domains in your security configuration.

connect-src https://*.vzbl.eu

When to load script?

The script loading must be triggered as soon as the page is displayed. You should place the script before the closing </body> tag on all pages of the site.

If you are using a TMS, install the script on all pages of the site and choose to execute the script on the "Dom Ready" event.

Events

When the library is loaded, it registers and transmits events occurring on the page where the sponsored ads were displayed. As a result, impressions and clicks are collected and processed to evaluate the performance of the campaigns.