Does Nelio Track Visitors Who Use Ad Blockers?

Some ad blockers may prevent Nelio A/B Testing from tracking visitors by blocking requests to Nelio’s tracking servers.

If this happens, you can configure the Cloud Proxy feature to send tracking events through your own domain instead.

Why Do Some Ad Blockers Interfere With Tracking?

Some ad blockers block not only advertisements but also analytics and tracking requests. This may include requests to Nelio A/B Testing’s tracking domain (api.nelioabtesting.com).

When these requests are blocked, Nelio can’t record the visitor’s page views, conversions, or other test data.ws, clicks, and heatmap data cannot be recorded for visitors using an ad-blocker.

purpose is to help you understand how users interact with your site in a privacy-safe way.

How to Track Visitors Who Use Ad Blockers

To reduce the chances of tracking requests being blocked, go to Nelio A/B Testing → Settings → Cloud Proxy and configure one of the available proxy methods.

1. REST API (Tracks Through Your WordPress Site)

With this option, tracking events are sent through a custom REST API endpoint on your WordPress site.

Advantages:

• Uses your own domain
• Helps prevent requests from being blocked by ad blockers

Considerations:

• Adds additional requests to your WordPress server
• The endpoint may need to be excluded from caching or CDN rules
• May not be the best option for high-traffic sites

2. Domain Forwarding (Recommended)

With Domain Forwarding, you configure a subdomain of your own site to forward tracking requests to Nelio’s servers.

For example:

tracking.example.com → api.nelioabtesting.com

Advantages:

• Uses your own domain for tracking requests
• Doesn’t add additional processing load to your WordPress server
• Helps prevent requests from being blocked by ad blockers

Considerations:

• Requires configuring a DNS alias (CNAME)

This is the recommended approach when available.

3. Disabled (Default)

If Cloud Proxy is disabled, tracking events are sent directly to Nelio’s standard tracking domain (api.nelioabtesting.com).

This works normally unless a visitor’s ad blocker or other privacy tool blocks requests to that domain.

What Data Does Nelio Track?

Nelio A/B Testing tracks test activity anonymously and doesn’t use the collected data to personally identify individual visitors.

For more information about the data stored in visitors’ browsers, see What Cookies Does Nelio A/B Testing Set?