# Tracking pixel

Concept · [Cloud, hosting and security](https://ecosystem.samcarlton.com/cloud)

Also called: pixel, pixels, Meta pixel, Facebook pixel, conversion pixel, web beacon

A tiny invisible image or snippet of code on a web page or email that reports back when someone views it or takes an action. Advertisers use it to measure ads and target people later.

**For example:** A store adds an ad platform's pixel to its checkout page, so the platform knows which ads led to purchases.

## Connects to (7)

- [Retargeting](https://ecosystem.samcarlton.com/retargeting): Showing ads to people who already visited your site or used your app, to bring them back.
- [First-party tracking](https://ecosystem.samcarlton.com/first-party-tracking): Collecting analytics on your own website through your own systems, rather than sending visitor data to outside ad or analytics companies.
- [Data privacy](https://ecosystem.samcarlton.com/data-privacy): How a company collects, uses, stores and shares information about people.
- [Offline attribution](https://ecosystem.samcarlton.com/offline-attribution): Connecting sales or sign-ups that happen outside a website, such as in a store or over the phone, back to the ads that led to them.
- [Programmatic advertising](https://ecosystem.samcarlton.com/programmatic-advertising): Buying and selling online ad space automatically through software, often in auctions that run in a fraction of a second as a page loads.
- [Meta Conversions API](https://ecosystem.samcarlton.com/conversions-api): A Meta service that lets a business send sales and signup events from its own server to Meta, so ads can be measured without relying only…
- [Google Tag Manager](https://ecosystem.samcarlton.com/google-tag-manager): A free Google tool for adding and managing tracking code, such as analytics and ad tags, on a website without editing the site's code each…

Map view: https://ecosystem.samcarlton.com/tracking-pixel