Did you know that every day you lose conversion data without realizing it, and you don't even notice it in your reports? Sounds strange, doesn't it? Well, it is The reality of thousands of Pinterest Ads accounts right now. And the worst part is that those lost data points are literally costing you money on every campaign.
In this article, I'm going to explain exactly what Pinterest's server-side tracking, why your standard pixel is no longer enough, and how you can implement it step by step (or how I can help you do it if you'd rather save yourself the headache).
Keep reading, because at the end I'll tell you about the most common mistake agencies make when implementing this, which can cause you to lose money instead of making it.
What is Pinterest's server-side tracking?
I'll put it simply. Imagine you have two spies sending you information about what people are doing on your website.
The first spy It's inside the user's browser. It's the standard Pinterest pixel, the one you install on your website using a code snippet. The problem is that this tracking pixel faces many obstacles: ad blockers, Safari and iOS restrictions, and browser privacy settings often block it from doing its job.
The second spy is on your server, in the «back end» of your website. No one can block this from view, because it doesn't depend on the user's browser. This is the server side tracking, also known as Pinterest Conversions API.
When you use both together, twice as much data is sent to Pinterest, which means its algorithms can optimize your campaigns more effectively.
Why Do You Need This Right Now?
Here's the important part—and it's the part that almost no one explains clearly.
The Traditional Pixel Is Becoming Less and Less Common
A few years ago, Pinterest's tracking pixel could see almost everything that happened on your website. Today, depending on your industry, you may be missing out on between 20% and 40% of your conversion events.
There are several reasons for this:
- Browsers like Safari block third-party cookies by default
- Ad-blocking extensions are becoming increasingly popular
- Users are increasingly rejecting cookies when they see the privacy notice
What This Means for Your Ads
If Pinterest doesn't see your actual conversions, its AI algorithm is learning from incomplete data. It's like trying to learn how to play darts while blindfolded half the time.
The result: your campaigns perform less effectively, your cost per result goes up, and Pinterest doesn't know which audience to show your ads to in order to drive more sales for you.
IMPLEMENTATION OF PINTERES' SERVER-SIDE TRACKING
Let's break this down into small pieces so you can understand it without your head spinning.
Step 1: Obtain the Access Token
First, log in to your Pinterest Business account and generate an access token from the Conversions API section. This token acts like a key that grants your server permission to communicate directly with Pinterest.
Step 2: Configure the Server
This is where most people get stuck. You need a server (it can be your own backend, or you can use tools like Google Tag Manager Server Side) that receives events from your website and forwards them to Pinterest using that token.
This requires knowledge of programming, domain configuration, SSL certificates, and an understanding of how to structure the requests made by the Pinterest API.
Step 3: Send the Correct Events
It's not enough to just connect to the server. You have to make sure you're sending the important events:
- PageVisit: when someone visits your website
- AddToCart: when you add something to your cart
- Checkout: when you complete a purchase
- Lead: when you fill out a form
Each event must be accompanied by user data (such as an email address or phone number, always encrypted) so that Pinterest can match it with its user database.
Step 4: Avoid Duplicate Events
This is where things can go wrong if you don't do it right. If you have both the browser pixel and the server-side tracking active at the same time, Pinterest might count the same event twice.
To prevent this, you need a system that deduplication, which typically uses a unique identifier (event_id) sent from both sides to tell Pinterest, «Hey, this browser event and this server event are the same—don’t count them twice.».
The Most Common Mistakes When Implementing It
I want to tell you something I see all the time when I review new clients' accounts.
Mistake 1: Not Checking «Match Quality»
Many people set up server-side tracking, consider it done, and never look at it again. But Pinterest provides a metric called «Match Quality» that tells you how well it’s identifying users. If this metric is low, it means that even if your technical implementation is working, the data isn’t very useful.
Mistake 2: Sending Unencrypted Data
Personal data such as email addresses or phone numbers must ALWAYS be encrypted using an algorithm called SHA-256 before being sent to Pinterest. If you send them in plain text, not only does this pose a serious privacy concern, but Pinterest may also reject those events outright.
Mistake 3: Failing to Address Cookie Consent
If a user rejects cookies, you cannot send their data to Pinterest. Your implementation must respect the consent preferences (CMP) that the user has selected; otherwise, you risk legal issues under the GDPR.
Mistake 4: Set It and Forget It
The Pinterest ecosystem is constantly changing. APIs are updated, event formats change, and what worked six months ago may stop working overnight without warning. It requires constant monitoring and maintenance.
Can I Set It Up Myself?
The honest answer is: yes, technically you can do it if you have knowledge of web development, servers, and APIs. Pinterest has official documentation that explains the process step by step.
But here's the part that almost no one tells you straight out: A poor implementation is worse than having none at all.
Why? Because if you send duplicate, malformed, or improperly encrypted data, Pinterest may:
- Penalizing the quality of your advertising account
- Giving you inflated conversion data that leads you to make the wrong decisions
- Silently decline your events without you even knowing
It’s like hiring someone to fix the electrical wiring in your house, but that person has never touched a wire before. You might not notice it at first, but the problem pops up when you least expect it.
What to Do If You Don't Want to Complicate Things
If, after reading all this, you’re thinking, «Okay, I get why it’s important, but I don’t have the time or technical know-how to do it right»… that’s totally normal. Implementing the Conversions API isn’t something you can learn in an afternoon.
At Analytic Pixel Pro This is exactly what we do: Implement Pinterest's server-side tracking (and other platforms such as Meta, TikTok, or Google) correctly, by verifying data quality, configuring deduplication, and ensuring cookie consent from day one.
If you'd like to see in detail how we implemented this, you can take a look at our Conversion API and server-side tracking implementation service, where we explain the entire process we follow to ensure your data is complete, clean, and ready for Pinterest to truly optimize your campaigns.
Summary: What You'll Take Away from This Article
Let's quickly go over the most important points:
- Pinterest's traditional pixel no longer tracks everything that happens on your website due to ad blockers and privacy restrictions
- Server-side tracking (Conversions API) sends that data directly from your server, without relying on the browser
- Implementation requires setting up a server, encrypting data, preventing duplicates, and ensuring consent
- A poorly implemented solution can be worse than having none at all
- Checking «Match Quality» regularly is key to knowing if it's working properly
Server-side tracking isn't just a passing trend; it's the direction all advertising platforms are heading. The sooner you implement it correctly, the sooner your campaigns will start generating high-quality data for optimization.
And if you ever need a helping hand to get this right from the start, you know where to find us.
