Detect AdBlock Using Pure JavaScript

By: fyvo August 4, 2025 JavaScript

Description

A practical script to detect AdBlock usage on your site and optionally display a custom message or redirect users.

Code Snippet

<div id="ad-banner" style="height:1px;width:1px;position:absolute;top:-9999px;">
  <script>
    document.getElementById('ad-banner').innerHTML = '&nbsp;';
  </script>
</div>

<script>
window.addEventListener('load', () => {
  const adBanner = document.getElementById('ad-banner');
  if (!adBanner || adBanner.offsetHeight === 0) {
    alert('Please disable your AdBlock to support our site.');
  }
});
</script>

Discussion (0)