> ## Documentation Index > Fetch the complete documentation index at: https://docs.mad-kitty.dev/llms.txt > Use this file to discover all available pages before exploring further. # Install your pixel on an external site > Make the pixel Bidder optimizes on actually fire where your traffic lands The **Meta pixel** is how Bidder knows an ad actually made money — it reports page views and conversions (purchases, trial starts) back to Meta, and Bidder optimizes on exactly those events. **If your ads land on Kitty funnels, stop here — you're done.** The pixel is wired into funnels automatically when they're published — see [What's tracked by default](/team/opti/tracking/events-and-pixel) for exactly which events fire. This guide is only for traffic that lands on **your own website**. ## The one rule The pixel installed on your site must be **the same pixel** Bidder's ad account uses as its default (Bidder tells you the ID during setup — it looks like a 15-digit number). A different pixel, or no pixel, means Bidder optimizes on silence: ads still run, but Meta can't see who converts, and performance decays fast. ## Install it Go to [facebook.com/events\_manager2](https://www.facebook.com/events_manager2) and select your pixel under **Data sources**. (Meta now calls the container a **dataset** — the dataset ID is your pixel ID.) Under the pixel's settings, pick **Connect data → Web**, then either: * **Partner integration** — Shopify, WordPress, Wix, Squarespace, Google Tag Manager and most site builders have one-click integrations. Use this when available. * **Manual install** — copy the base-code snippet into your site's `` on every page. Connect data source — Web Install base code step Page views alone aren't enough — Bidder optimizes on a conversion event (**Purchase** or **StartTrial**, whichever was chosen during setup). Partner integrations usually map these automatically; with a manual install, fire the event on your purchase/trial confirmation step. In Events Manager, open the **Test events** tab, enter your site URL, and complete a test conversion. You should see the event appear within seconds. The [Meta Pixel Helper](https://chrome.google.com/webstore/detail/meta-pixel-helper) browser extension is also handy for spot checks. Test events tab ## After installing Tell Bidder it's done — it will confirm the account is wired end-to-end. Until real conversions flow, expect Meta to spend a learning-phase period exploring; that's normal.