Medium Interactive

MDI HTTP Referer Block enables WordPress site owners to detect and control user experience based on the origin of traffic. By analyzing the HTTP referrer (both server-side via PHP and client-side via JavaScript when headers are missing), this plugin makes it easy to apply different behavior for visitors arriving from ads, social platforms, or syndicated search networks.
You can define specific referrer domains or patterns, and when a visitor matches those conditions, the plugin can:
<ul>
<li>Display a small notification (server-side) showing the detected referrer host or path.</li>
<li>Hide or reveal specific elements on your site using CSS selectors.</li>
<li>Redirect visitors from certain sources to a different URL.</li>
</ul>
This gives marketers, advertisers, and site owners fine control over how different audiences see the site.
Example use cases:
<ul>
<li>Hide contact forms when users arrive through syndicated search traffic to prevent spam or low-quality leads.</li>
<li>Hide pricing details when a user comes from social media to encourage engagement before pricing exposure.</li>
<li>Redirect visitors from affiliate networks to a dedicated landing page.</li>
<li>Show a simple banner confirming that the user arrived via a partner campaign.</li>
</ul>
The plugin sets a tracking cookie (<code>mdi_syndicated_ref</code>) to remember the detected source for the configured number of days, ensuring consistent visibility rules on repeat visits.
MDI HTTP Referer Block helps you tailor on-site experiences dynamically based on real visitor origin — simple, server-side controlled, and privacy-respecting.
For a full guide on blocking syndicated search traffic (e.g., Google Ads Performance Max), see: 
https://mediuminteractive.com/how-to-block-syndicated-search-traffic-from-performance-max-campaigns-in-google-ads/

MDI HTTP Referer Block

Hide elements or redirect users based on referrer domains. Useful for blocking partners, scrapers, or altering content per source.

PHPApps

Webmasters can use this tool to prevent their site from appearing in the backlink statistics of another webpage and server logs of referred pages as referrer. The operators of the referred pages cannot see where their visitors come from any more. Untrace.me provides a slick, quality derefering service for free. No ads, interstitials or popups. We promise.
When using Untrace.me you don’t link directly to the external target web page but to Untrace.me which redirects your users to the desired page then. So the target page doesn’t get to know that the user actually came from your site.
UntraceMe removes the referer (referrer) from all external links on your blog. It does this by converting all outgoing links on your blog using the untrace.me service and effectively hides your site as origin of the referred link. This option can be activated in the UntraceMe Settings page.

UntraceMe Dereferer Service

Webmasters can use this tool to prevent their site from appearing in the backlink statistics of another webpage and server logs of referred pages as r …

MDI HTTP Referer Block vs UntraceMe Dereferer Service