Since Facebook is not really good when it comes to privacy, I wanted to hear your opinions and advice. What's the pros and cons? Thanks in advance.
Sorry, not a native speaker.
* Extra JavaScript to download and execute, slows down site on low-end devices
* Privacy: you know share all the data of your visitors with Facebook
* Blocked by ad-blockers, so the analytics that you get out of it are not accurate
Cons:
* Facebook now stalks every visitor of your website, regardless of whether they have an account or arrived from the ad
* Not GDPR compliant unless you ask for opt-in, and nobody in their right mind will actually opt-in
I suggest against using the pixel and instead making your ad point to a dedicated URL (https://example.com/?source=instagram_campaign_id) which will allow you to measure ad performance on your site (through server logs or whatever analytics you already have) without compromising your visitor's privacy.