Third- and first-party cookies are both collected and used for tracking user behavior. Although the two have similar purposes, they are collected and used differently. The first-party cookies are stored directly by the website or the user’s domain. The first-party cookies allow a website owner to collect the analytics data, remember settings such as language, and perform the other valuable functions that offer a good user experience. They also ease the client-side loading, which can further be optimized using headless CMS.

The third-party cookies are usually created by the domains which aren’t on the website that a user is visiting. Third-party cookies are typically used for internet-based advertising purposes and are placed on a webpage or a website through a tag or script. Third-party cookies are generally accessible on aby website loading the third-party server code. As you can see, the first- and third-party cookies are different. They also have the following differences:

Setting The Cookie

The first difference between the two types of cookies is that first-party cookies are set to any JavaScript code loaded on a website or the publisher’s webserver. On the other hand, third-party servers set third-party cookies or a code loaded onto the publisher’s website.

Browser Support

To begin with, first-party cookies are supported by all the browsers. Further, a user can delete or block them from the client-side. On the other hand, though all browsers support third-party cookies, many block the creation of third-party cookies by default. The user’s also can delete the third-party cookies on their own.


When it comes to privacy, first-party cookies are less intrusive than third-party cookies. First-party cookies can only be accessed by the domain that created them. Your web browser will only send information in the first-party cookie to the website that set it. Third-party cookies can be read and updated by third-party companies, using this information for targeted advertising.


The website sets the lifetime of first-party cookies. The user can delete them at any time. Third-party cookies, on the other hand, have a limited lifetime set by the advertiser. Once this time expires, the cookie is deleted automatically.

Cookie Availability

A first-party cookie is only available to the website or domain which created it. On the contrary, third-party cookies are usually accessible and available to the domain or website loading a third-party-server code.

Wrap Up

The pending changes to the way marketers can and cannot use the cookies in the future and raising privacy concerns might feel overwhelming. However, they aren’t the end of everything. The key to future success is creating and cultivating relationships driven by a mutual trust with your customers. Headless CMS can help you do just that by creating the best digital experiences for your customers.