> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.omegatheme.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# 🔎 Understanding data absence

Event loss is hard to bear. Here's why it happens and how CAPI solves it.

### Why your Pixel can't see every shopper
* **Privacy opt-outs.** Apple's iOS App Tracking Transparency lets users opt out of tracking with one tap — and a large share do, especially in the US.
* **Cookie blockers + ad blockers.** Millions of shoppers run extensions like uBlock that block `connect.facebook.net` before the Pixel even loads.
* **Browser privacy.** Safari ITP, Firefox ETP, and Chrome's evolving cookie policy all limit how long the Pixel can track a session.
|| When any of these triggers, the Pixel is literally helpless — the request never reaches Meta.

### CAPI to the rescue
Conversion API sends events directly from your store's backend to Meta — **server-to-server**, no browser involved. So:
* Ad blockers can't strip the request — it never touches the browser.
* iOS opt-outs don't apply — the data isn't tracked across apps, it's reported directly.
* Browser cookie limits don't matter — the connection is your server's, not the shopper's.
| CAPI ensures no data loss. Meta sees the full picture of what's happening on your store.

But CAPI is tech-demanding compared to one-click Pixel installs. Omega handles the backend for you — turn it on once and forget about it. 
👉[🔐 Level up your data with CAPI](https://help.omegatheme.com/en/article/level-up-your-data-with-capi-1m3xkwt/)