Optimize Your Website by Delaying Loading the Facebook Pixel 📈

After solving this Growth Hack, you will be able to benefit from better performance simply by adding a few lines of code to the Pixel provided by Facebook.

Optimize Your Website by Delaying Loading the Facebook Pixel 📈
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Do you want to improve the performance of your website without sacrificing the power of the Facebook Pixel? It is possible!

In this detailed guide, learn how to:

  • Accelerate the loading of your pages 🏎️
  • Improve your overall SEO score 📈
  • Refine the targeting of your Facebook 🎯 audience
google search console performance alert

If, as in my case, the addition of the Facebook pixel has resulted some alerts from the Google Search Console on performance, it's time to give your site a boost.

Let's go!

Guide to Optimizing Facebook Pixel Loading

Step 1: Analyze the current performance of your site

Before making any changes, it is crucial to have a basis for comparison:

interface de GTmetrix
  1. See you on GT Metrix
  2. Enter your site URL and start an analysis
  3. In particular, note:
    • The overall performance score
    • The loading time of the page
    • The resources consumed by Facebook scripts
‍L'analyse GT Metrix révèle souvent que les scripts Facebook sont gourmands en ressources
GT Metrix analysis often reveals that Facebook scripts are resource intensive

Key point : Keep a screenshot of these results to compare after the changes.

CLS enhancement under google search console
CLS > 0.1

Step 2: Move the Facebook Pixel code

The placement of Facebook Pixel Codek is crucial for its optimal loading:

  1. Locate the current Facebook Pixel code:
    • If he is in the <head>, remove it
    • If it's managed by Google Tag Manager, get ready to edit it directly
  2. Place the code in the <footer> of your site:
    • If you use WordPress, the plugin”Insert Headers and Footers“can facilitate this operation
    • For other CMS or static sites, add the code just before the tag </body>
Correct placement of Pixel code in your site's footer

tip : By placing the code in the footer, you allow the main content to load first.

Step 3: Change the Facebook Pixel code

Here's the magic part that's going to really make a difference:

  1. Open your code editor
  2. Locate the Facebook Pixel code
  3. Change it as follows:

 setTimeout (function () {
 ! function (f, b, e, v, v, n, t, s) {
 if (f.fbq) return;
 n = f.fbq = function () {
 n.callmethod.apply (n, arguments): n.queue.push (arguments)
 If (! f. _fbq). _fbq = n;
 n.push = n;
 n.loaded =! 0;
 n.version = '2.0';
 n.queue = [];
 t = b.createElement (e);
 t.async =! 0;
 t.src = v;
 s = b.getElementsByTagName (e) [0];
 s.parentnode.insertBefore (t, s)
 } (window, document, 'script', 'https://connect.facebook.net/en_US/fbevents.js');
 fbq ('init', 'YOUR_PIXEL_ID');
 fbq ('track', 'pageView');
 }, 3500);
 <img height="1" width="1" alt="Facebook pixel” style="display:none”
 src=” https://www.facebook.com/tr?id=VOTRE_ID_PIXEL&ev=PageView&noscript=1"/ >

Explanations :

  • The function setTimeout Delays script loading by 3.5 seconds (3500 milliseconds)
  • The attribute alt is added to the pixel image to improve accessibility

Show ImageFacebook Pixel code optimized for delayed loading

Step 4: Test and validate changes

After making these changes, it is crucial to check that everything is working properly:

  1. Go back to GT Metrix and start a new analysis
  2. Compare the new results with those from Step 1
  3. Verify in Facebook Ads Manager that Pixel data is still being collected

Point of vigilance : If you notice anomalies in data collection, adjust the load time (currently 3500ms) to a lower value.


Will the delayed loading of the Pixel affect the accuracy of my Facebook data?

No, important data will still be collected. Visitors who leave the page in under 3.5 seconds are rarely qualified leads anyway.

Can I apply this technique to other scripts?

Absolutely! This method can be adapted to various JavaScript or CSS scripts. Be careful and test each change to avoid “breaking” your site.

What is the ideal time frame for delayed loading?

It depends on your site and your audience. Start with 3500ms and adjust based on your performance and conversion analyses.


By applying this technique of delayed loading the Facebook Pixel, you significantly improve the performance of your site without compromising the collection of crucial data for your advertising campaigns.

The benefits are multiple:

  • Improving the loading speed of your pages
  • Best overall SEO score
  • More precise targeting on Facebook (only really interested visitors are tracked)

Remember: web optimization is a continuous process. Continue to monitor your performance and adjust your strategy based on the results you see.

A-grade website performance improvement on GTMetrix

So, ready to give your site a boost?

To your codes! 🚀

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