What it does
Pixels like the Meta Pixel, TikTok Pixel or Google tag report events such as page views, add-to-carts and purchases. Ad platforms use that data to measure results, build retargeting audiences and optimize who sees your ads.
Why pixels miss data
Ad blockers, browser privacy features and consent choices can stop pixels from firing. That's why many advertisers pair pixels with server-side tracking, like Meta's Conversions API.
Privacy and consent
In many regions, tracking requires consent, and health or financial sites need extra care about what data pixels send. Set them up deliberately, not by default.
Why Tracking Pixel matters
Without working pixels, ad platforms can't tell which ads lead to sales, so they can't optimize. Broken or duplicated pixels are one of the most common reasons ad results look wrong.
The purchase that counted twice
A store had its Meta Pixel installed twice, once by a theme and once by an app. Every purchase was reported twice, which made ads look far more profitable than they were. Removing the duplicate brought reported results back in line with real orders.
Common mistakes
Duplicate pixels
Two copies of the same pixel double-count events. Check with the platform's helper tool.
Relying on the pixel alone
Browser-based tracking misses a share of conversions. Add server-side tracking where it matters.
Sending sensitive data
Pixels on health, finance or personal pages can leak sensitive information. Review what each event sends.
Where we work on this