<b>Should I trust pixel tracking or server postbacks for clean reporting?</b>

<b>Should I trust pixel tracking or server postbacks for clean reporting?</b>

Q: My numbers differ between the pixel and the postback. Which is the honest one?

A: Neither lies, but they measure different moments and fail in different ways — and that gap is where disputes start.

A conversion pixel fires in the user's browser. It's easy to set up but vulnerable to:

— Ad blockers and tracking-prevention features dropping the call.
— Page closes before the pixel loads.
— Duplicate fires on refresh, inflating counts.

A server-to-server postback fires advertiser-server to your-server, no browser involved. It's the cleaner record because it can't be blocked client-side and carries a unique click ID, so it's far harder to fake or duplicate.

For compliance and dispute resolution, postbacks win. When your pixel shows more conversions than the postback, the difference is usually browser-side loss and duplicates, not theft. When the postback shows fewer than the advertiser confirms, you have a parameter passing problem.

Short version: trust the server postback as your source of truth, and use the pixel as a secondary sanity check.

Still stuck? Drop your case in the comments.