The usap.gov website
HTTP cookies share their name with a popular baked treat.
The nasa.gov home page in 2015
A possible interaction between a web browser and a web server holding a web page in which the server sends a cookie to the browser and the browser sends it back when requesting another page.
Server-side programming language usage in 2016.
In this fictional example, an advertising company has placed banners in two websites. By hosting the banner images on its servers and using third-party cookies, the advertising company is able to track the browsing of users across these two sites.
A cookie can be stolen by another computer that is allowed reading from the network
Cross-site scripting: a cookie that should be only exchanged between a server and a client is sent to another party.

HTTP cookies (also called web cookies, Internet cookies, browser cookies, or simply cookies) are small blocks of data created by a web server while a user is browsing a website and placed on the user's computer or other device by the user's web browser.

- HTTP cookie

Dynamic sites can be interactive by using HTML forms, storing and reading back browser cookies, or by creating a series of pages that reflect the previous history of clicks.

- Website
The usap.gov website

3 related topics

Alpha

Hypertext Transfer Protocol

Application layer protocol in the Internet protocol suite model for distributed, collaborative, hypermedia information systems.

Application layer protocol in the Internet protocol suite model for distributed, collaborative, hypermedia information systems.

URL beginning with the HTTP scheme and the WWW domain name label
Tim Berners-Lee
An HTTP/1.1 request made using telnet. The request message, response header section, and response body are highlighted.

A web browser, for example, may be the client whereas a process, named web server, running on a computer hosting one or more websites may be the server.

Some web applications need to manage user sessions, so they implement states, or server side sessions, using for instance HTTP cookies or hidden variables within web forms.

The historic World Wide Web logo, designed by Robert Cailliau.

World Wide Web

World's dominant software platform.

World's dominant software platform.

The historic World Wide Web logo, designed by Robert Cailliau.
A web page displayed in a web browser
A global map of the Web Index for countries in 2014
This NeXT Computer was used by Sir Tim Berners-Lee at CERN and became the world's first Web server.
The World Wide Web functions as an application layer protocol that is run "on top of" (figuratively) the Internet, helping to make it more functional. The advent of the Mosaic web browser helped to make the web much more usable, to include the display of images and moving images (GIFs).
Graphic representation of a minute fraction of the WWW, demonstrating hyperlinks
A screenshot of a web page on Wikimedia Commons
Dynamic web page: example of server-side scripting (PHP and MySQL)
The usap.gov website
The inside and front of a Dell PowerEdge web server, a computer designed for rack mounting
Multiple web servers may be used for a high traffic website; here, Dell servers are installed together to be used for the Wikimedia Foundation.
The results of a search for the term "lunar eclipse" in a web-based image search engine

Multiple web resources with a common theme and usually a common domain name make up a website.

If the website uses HTTP cookies, username, and password authentication, or other tracking techniques, it can relate other web visits, before and after, to the identifiable information provided.

Traditional browser arrangement: UI features above page content

Web browser

Application software for accessing the World Wide Web or a local website.

Application software for accessing the World Wide Web or a local website.

Traditional browser arrangement: UI features above page content
Nicola Pellow and Tim Berners-Lee in 1992
Marc Andreessen, lead developer of Mosaic and Navigator, in 2007

When a user requests a web page from a particular website, the web browser retrieves the necessary content from a web server and then displays the page on the user's device.

During the course of browsing, cookies received from various websites are stored by the browser.