Official comment
Put the pixel in the ONTRApages Settings >> Custom Header Code. You won't need it on the WordPress site itself.
You can use a browser plugin like this one for Chrome to verify that it is working: Facebook Pixel Helper
Our Certified Consultant Diana Koshedzhiyska has recommended using Google Tag Manager to add all of your tracking scripts to ONTRApages. The steps are:
- Create a Tag Manager account
- Add tags you want
- Publish tag manager
- Paste the code to all your OP pages.
For the Facebook Pixel Code you would paste it into a "custom HTML tag" in Google Tag Manager. The advantage of this approach is if you want to later add another tracking script like Wicked Reports you can simply add it to the Google Tag Manager. It will then automatically propagate to all your published pages without editing each one individually.