Ad Blocker detection AKA Adblock Plus

Question

After searching Google and Stackoverflow for a few hours I could not find a solution. What I\'m trying to do is detect Adblock plus and display a simple message for now.

Answer 1

It's an arms race, for sure, and I support anyone's right to block ads, but I also support websites that depend on ad revenue trying to convince users otherwise, or perhaps persuade them to subscribe or make a donation to make up for lost ad revenue. I don't approve of sites trying to force users to see ads, but a polite message is fine.

Anyway, right now it's worth noting that there are many adblocking extensions/plugins, and they can all have different ways of doing it, and it sometimes is different between OSes and browsers too. I've found that for my purposes right now, this jQuery selector is enough to at least see whether AdBlock or AdBlockplus is being used, cross-platform, across at least Chrome and Firefox:

if($("div[id^=google_ads_iframe_] iframe:visible").length == 0)  {
    // pop up a message or whatever
} 

Answer 2

Simple javascript/jQuery detection that works nicely:

$('body').append('<div id="ad-container" style="position:absolute;"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAUEBAAAACwAAAAAAQABAAACAkQBADs=" id="ad"></div>');
var ad_container = $('body').children('#ad-container');
if(!ad_container.is(":visible")) {
  // Add your warning and/or adblock detection logic here.
}
ad_container.remove();

Answer 3

Here is the code to detect adblock. You can learn how the code works here

function detect()
{
    //create a iframe. Append the iframe to the body. And then after 100ms check if their offsetHeight, display or visibility is set such a way that user cannot see them.
    //In the URL use the words specific to advertising so that Adblock can do string matching.
    var iframe = document.createElement("iframe");
    iframe.height = "1px";
    iframe.width = "1px";
    iframe.id = "ads-text-iframe";
    iframe.src = "http://domain.com/ads.html";

    document.body.appendChild(iframe);

    setTimeout(function()
               {
                   var iframe = document.getElementById("ads-text-iframe");
                   if(iframe.style.display == "none" || iframe.style.display == "hidden" || iframe.style.visibility == "hidden" || iframe.offsetHeight == 0)
                   {
                        alert("Adblock is blocking ads on this page");
                        iframe.remove();
                   }
                   else
                   {
                        alert("Adblock is not detecting ads on this page");
                        iframe.remove();
                   }
               }, 100);
}

Answer 4

For me none of the tricks worked, may something I was doing wrong. but this is a very specific way to implement for google ads.

window.onload = function() {
   if (document.getElementsByClassName('google-auto-placed').length == 0){
                // Adblock Detected
   }        
}

If you have other ad system like amazon, look for their generic class name / ids by inspecting page.

If you are planing to put this code in seperate .js file make sure file name does not have "Ad" word in it. just name it magic.js

If Google ever decides to change div name, this method would fail. but that seems unlikely.

Answer 5

A simple Ajax call does the job:

var xmlhttp = new XMLHttpRequest()
xmlhttp.onreadystatechange = function() {
  if( xmlhttp.readyState == XMLHttpRequest.DONE ){
    if( xmlhttp.status !== 404 ){
        console.log("Blocking ads")
    }else{
        console.log("Not blocking ads")
    }
  }
}
xmlhttp.open("GET", "/498100ffe815d700cd838d1/ads/showad.js", true)
xmlhttp.send()

Or even better, without an extra HTTP overhead:

var adBlockTester = document.createElement('div');
adBlockTester.innerHTML = ' ';
adBlockTester.className = 'adsbox';
document.body.appendChild(adBlockTester);
window.setTimeout(function() {
  if( adBlockTester.offsetHeight === 0 ){
    console.log("Blocking ads")
  }else{
    console.log("Not blocking ads")
  }
  document.body.removeChild(adBlockTester);
}, 60);

Answer 6

Use my plugin "FuckAdBlock", it can very easily detect AdBlock: https://github.com/sitexw/FuckAdBlock

Example :

fuckAdBlock.on(true, function() {
    alert('AdBlock detected !');
}).on(false, function() {
    alert('AdBlock is not detected =)');
});

Example online: http://fuckadblock.sitexw.fr/