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Everything you need to know about Facebook Conversions API

By Zachary McDaniel | No Comments | 11th January 2021

The world of advertising nowadays relies completely on data. Most often, this data comes from browsers. This can be a massive issue for users with connectivity issues. And, as we’ve talked about before, the industry is moving away from cookie-based server tracking.

In order to fully understand audiences, companies need to dig deep into their funnels in order to get a good grasp on the customer’s journey they need to use an ad tracker to optimize their ad experience. That all sounds great, but how is it done?

Since cookies are no longer the cornerstone of online advertising, how do we stop privacy implications from blocking data collection with cookies and pixels? With the development of Intelligent Tracking Prevention (ITP) systems, we’ve seen trends in the past few years where browsers are phasing out third-party data entirely.


The answer to these questions is Facebook Conversions API (formerly known as Server-Side API), and today we’re going to talk all about it.

What is Facebook’s Conversion API?

As stated just above, Facebook Conversion API used to be known as Facebook Server-Side API. It’s designed to help businesses maintain data privacy all while delivering personalized advertising experiences to customers and audiences. This is all done without having to rely on browser based tools like cookies.

Facebook’s Conversions API is thorough and provides businesses with a wealth of helpful tools and insights. Here is what it provides:

  • Full funnel visibility:​ Conversions API offers businesses the ability to share exactly the data they want to, and nothing else. This is more than what Facebook Pixel alone currently offers. That being said, combining both Pixel and Conversions API means full-funnel visibility.

Pixel alone offers insight into actions that occur on-website. These actions could be something like a page view or a purchase. When combined with the Conversions API, you truly get the full picture of the customer journey. Actions like off-website purchases and whether or not a customer continues to use their free trial and then converts are now tracked.

  • Accurate data sharing:​ Sharing data through Conversions API is more accurate than any other method in the mid-funnel and lower funnel. Businesses don’t have to worry about any data getting lost due to a browser crash or an ad blocker.

  • Data control: ​Conversions API gives businesses control over what data they share. This means that businesses can implement the Conversions API in addition to Pixel and decide what to share and when to share it. By contrast, Pixel sends all events in real-time.

Instead of sharing data with the browser, Facebook Conversions API companies can share the data that matters with Facebook through their server. This means that if a customer uses a privacy tool for non-Facebook Activity, their actions will be extended to data sent through the Conversions API.

Server-side API Facebook

Server-side APIs are programmatic interfaces that contain at least one publicly open endpoint to a request/response system. For the most part, these are expressed in JSON or XML. These are exposed through the web, usually by the means of a HTTP web server.

Of course, as we mentioned briefly above, the Server-side API from Facebook is no longer called such. Instead, it is completely referred to as Conversions API.

Conversions API Facebook

Facebook itself encourages advertisers across the board to implement the Conversions API in addition to Pixel for optimal full-funnel tracking and data sharing that is much more reliable. This way, advertisers can transmit a larger array of data in order to back their advertising efforts. With the implementation of Conversions API, data such as CRM data/lower funnel events can be captured. This is more than Pixel can offer alone.

Companies with high security needs can use Conversions API to decide the data that they want to share. Implementing the Conversions API will require some development resourcing, but a network of partners that are certified through Facebook or your own existing system integrator/marketing platform provider can help in the implementation.

What is the API and Conversion process?

This is all very technical, but it’s not as difficult to understand when it’s laid out in a step-by-step process. Here’s a quick rundown of how Facebook Conversions API works:

  • First, the customer enters the website.

  • The website has to have Facebook Pixel. Facebook Pixel documents user data in cookies (which is 1st party).

  • The server will save user information in the same way that it saves IP addresses, user-agents, Google Analytics client_id, and other parameters.

  • When the user (with their saved user data) triggers an event, the server will make a request that contains information about said event and said user to the Facebook server.


Facebook Conversions API is very intuitive, but it doesn’t take much know-how in order to set it up. In fact, all you really need is:

  • Facebook Business Manager (This is a must, as you cannot use Facebook Conversions API without it).

  • Set up a Facebook Pixel with your website. It’s important to note that it should be correlated with Business Manager.

  • A Facebook App. This is an app for working with Facebook Conversions API and it’s combined with Business Manager.

What conversions can be tracked with the Conversions API?

With all this talk of event tracking, it’s important to note what type of events are tracked through the Conversions API. Here are the events that can be tracked:

  • Leads

  • Affiliate payments

  • Find locations

  • Phone calls

  • Form submissions

  • Purchases

  • Email subscriptions

  • Subscription changes

Facebook’s Conversions API has a unique set of benefits that browser Pixel simply does not. Some of these benefits include a better overview of omnichannel customer journeys. This is done by conquering things that used to be challenging for event tracking. These overcoming challenges include:

  • Bad network connections

  • Long loading times for pages

  • Ad blockers

Possibly the best benefit of the Facebook Conversions API is that you can control the data that is shared with Facebook servers. This gives you the ability to track offline conversions like in-person purchases and sales made over phone calls.

With the Conversions API, you can send offline events’ data directly to Facebook.

Why use LeadsBridge as a Facebook partner

This is a great point to think about. Many companies have the option to develop CAPI technology in-house, but is that the best solution?

The answer is no, for several reasons that companies need to address to get the most out of this technology, for example:

  • Having a deep understanding of CAPI
  • Quickly develop the necessary integrations and keep them up to date
  • Properly manage complex data while avoiding leaks

So how can companies use this technology without encountering the problems listed above? Simple, they need to use an FMP like LeadsBridge.

LeadsBridge is an FMP-Facebook Marketing Partner, which is a Facebook-approved App for API management and maintenance. Therefore, by using our platform for CAPI technology, customers will always have up-to-date and functional integrations (usually, Facebook updates its APIs every 2 or 3 months).

Technical Support & Integration Maintenance, during the onboarding phase, our team will talk to the customers’ tech-team to understand the most efficient and least expensive way to retrieve data from their data warehouse and keep the data up-to-date with Facebook SS-API.

Like all data partners, Leadsbridge can troubleshoot technical issues for the Side-Side program along with the length of service; plus if over time your team needs to update the integration and add more data, our Solution Specialist will guide you using our UI or talk to your tech team to understand how we can retrieve more data.

As a Facebook Marketing Partner, LeadsBridge offers the ability to develop integrations that are tailor-made for businesses. With prior iPaas experience boasting the development of 370+ different “out-of-the-box” platforms and 400+ “custom” integrations, the average development time required for these types of integrations is 2-6 weeks.

This allows companies to decrease the “time-to-market significantly”. Once integrated with LeadsBridge, you will be able to send your data to any other platform (e.g. Facebook, Google, BI tools).

Integrations available for Facebook Conversions API

In order to get the most out of Facebook Conversions API, you’re going to want to integrate it with your favorite CRM. Through LeadsBridge, those integrations are possible.

Facebook conversion API

Of course, these are just a few examples of integrations for Facebook Conversions API with LeadsBridge. The list is always up-to-date.

If you’d like to learn more about integrations for Facebook Conversions API with LeadsBridge, feel free to contact us, or click the link.

Conclusions and takeaways

In conclusion, Conversions API is a great tool for advertisers. It’s used by advertisers around the world in order to gain better insight into the customer’s funnel journey, and customize their ad experience in order to achieve better results.

All of this unique ad experience is done while maintaining data privacy. Data privacy is a massive deal in advertising since cookies and browser-based tracking are dying off fast, especially in the mid and lower funnel, where customers share important and personal data.

Businesses are looking more into 1st-party data that they have within their CRMs and other assets in order to create campaigns that make more of an impact. That being said, not being able to use cookies can result in some problems. It affects retargeting, tracking conversions, business intelligence systems, and a lot more.

The best solution to this problem is connecting 1st-party data directly to the advertising platform. Using Conversions API allows you to push data directly to Facebook, thus avoiding using cookies entirely, and making your campaigns that much more effective.

To top it all off, by using LeadsBridge, you can automate the process. Connecting Conversions API to your CRM means that data is getting pushed to the platform and the results are being recorded properly.

Get access now and Unleash the Power of new Facebook Conversions API

Zachary McDaniel

Zachary is a Content strategist, a freelance writer, and a world traveler. Fueled by the technical details and inspired to continuously learn more. Helping small startups and massive enterprises alike grow their brand.

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