Meta Fbclid Parameter

​@DeliveryTasker73878 - I would recommend setting up your facebook meta ad to link to your website (with Calendly embedded) instead of directly to Calendly.

This would allow you to use some custom javascript extract the Fbclid from the parent url and pass it as a param into the embedded Calendly booking page as a UTM param (which Calendly will track).

 

// Extract fbclid (or any param) from the parent page URL
function getUrlParam(param) {
   const urlParams = new URLSearchParams(window.location.search);
   return urlParams.get(param);
}

// Build the Calendly URL with UTM params
const fbclid = getUrlParam('fbclid');
const baseCalendlyUrl = 'https://calendly.com/YOUR-USERNAME/YOUR-EVENT';

Calendly.initInlineWidget({
  url: `${baseCalendlyUrl}`,
  parentElement: document.getElementById('calendly-embed'),
  prefill: {},
  utm: {
    utmSource: 'facebook',
    utmMedium: 'paid',
    utmCampaign: fbclid || 'no_fbclid',
  }
});

Thanks. Here’s a sample of the fbclid (see below).

It appears that the UTM parameter char limit of 255 applies for Calendly.

Whilst the sample below is 200, a quick google search shows that the Meta Ads fbclid may not be restricted to 255 char.

Do you think i’m over worrying?

fbclid=IwY2xjawQLfIFleHRuA2FlbQEwAGFkaWQBqzKBGw2CDGJyaWQRMmhlUHB6VW52eGdCNGplTXNzcnRjBmFwcF9pZBAyMjIwMzkxNzg4MjAwODkyAAEei8uL7Fu7cKMX5-hzZfcX9PKJB_6TWs40PuCiKNwvXzYc_S1oHLeyqzqos_o_aem_0IiQMcYBgFHjFawSofA6ow

​@DeliveryTasker73878 - to be safe you could update the JS to truncate the id to 255 characters max; it seems very unlikely that in a scenario where it is greater than 255 that the first 255 characters wouldn’t be unique.

 

const fbclid = (getUrlParam('fbclid') || '').substring(0, 255);