Cookies, Pixels & Similar Technologies
How Cookies Work
Cookies and other similar technologies help provide a better, faster and safer experience.
Technologies like cookies, pixel tags ("pixels"), and local storage are used to deliver, secure, and understand products, services, and ads, on and off Facebook. We want this page to help you understand more about these technologies and how they are used. Your browser or device may allow you to block these technologies, but you may not be able to use some features on Facebook if you block them. For more information about whether these tools are available, what they do and how they work, visit your browser or device's help material. Generally, tools like these in your browser or device affect only that particular browser or device. So if you’re using multiple browsers or devices, you can make different choices for each of them.
Check back here from time to time to get the latest information about these technologies and how they are used.
We and our affiliates, third parties, and other partners (“partners”) use these technologies for security purposes and to deliver products, services and advertisements, as well as to understand how these products, services and advertisements are used. With these technologies, a website or application can store information on your browser or device and later read that information back. We explain more about each of these technologies and how they are used on this page.
Why do we use these technologies?
| Show what matters to you | Improve your experience | Protection and security |
| They help us know who you are so we can show content that’s most relevant to you, including features, products, and ads. | They work with Facebook features and help us improve our products and services – so you can do things like see which friends are online in chat, use share buttons, and upload photos. | They help secure Facebook by letting us know if someone tries to access your account or engages in activity that violates our terms. |
| Categories of use | Examples |
|---|---|
| Authentication | These tools tell us when you’re logged in, so we can show you the appropriate experience and features. For example, cookies, local storage and similar technologies tell us when you are logged in to Facebook so we can show you relevant and social information when you visit other websites that use our social plugins. We also use this information to understand how people use our Platform and other apps and services. |
| Security and site integrity | We use these to help keep Facebook safe and secure. They support or enable security features and help us detect activity that violates our Statement of Rights and Responsibilities. For example, they help protect your account from being accessed by anyone other than you. Cookies also let us know when several people have logged in from the same computer. |
| Advertising | Things like cookies and pixels are used to understand and deliver ads and make them more relevant to you. For example, we may read a cookie so we can show you ads that may be interesting to you on Facebook or other websites. We may also use a cookie to learn whether someone who saw an ad on Facebook later visited the advertiser’s site. Similarly, our partners may use a cookie or another similar technology to determine whether we’ve shown an ad and how it performed or provide us with information about how you interact with them. We also may work with a partner to show you an ad on or off Facebook, such as after you’ve visited the partner’s site or app and this may involve the use of cookies, local storage on your device or other similar technologies. |
| Localization | These help Facebook provide a localized experience. For example, we may store information in a cookie that is placed on your browser or device so you will see the site in your preferred language. |
| Site features and services | These provide functionality that help us deliver products and services. For example, cookies help you log in by pre-filling the username field and help make chat a better experience by showing which of your friends are online. We may also use cookies and similar technologies to help us provide you and others with social plugins and other customized content and experiences, such as making suggestions to you and others. Learn more. |
| Performance | We use these to provide you with the best experience possible. For example, we may use a cookie to help us route traffic between servers and understand how quickly Facebook loads for different people. Sometimes we may store information on your browser or device so Facebook features you are using load and respond faster. |
| Analytics and research | These are used to understand, improve, and research products and services, including when you access Facebook or other websites and apps from a computer or mobile device. For example, we may use cookies to understand how you are using social plugins to improve them. We and our partners may use these technologies and the information we receive to improve and understand how you use websites, apps, products, services and ads. We may share information about this analysis with our partners. |
The specific names of the cookies, pixels and other similar technologies that we use may change from time to time, but they generally will fall into the above categories. If you’d like to learn more about these tools, review our Data Use Policy. You can also take a look at the cookies section of our publicly available audit that provides a snapshot of the cookies we use, which was performed by the Irish Data Protection Commissioner’s Office. This will give you a good idea of the cookies we describe on this page.
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