Käyttäjäagentin

Käyttäjäagentti, often translated as "user agent" in English, refers to software that acts on behalf of a user. This term is most commonly encountered in the context of web browsing. When a web browser accesses a website, it sends a user agent string to the server. This string is a piece of text that identifies the browser and operating system being used, along with other details like the version number.

Web servers use the user agent string to tailor the content they send back to the user. For example, a server might detect if a user is on a mobile device and send a mobile-optimized version of a webpage. It can also be used for analytics, allowing website administrators to understand the types of browsers and devices their visitors are using. Different browsers, such as Chrome, Firefox, Safari, and Edge, each have their own distinct user agent strings. Similarly, operating systems like Windows, macOS, Linux, Android, and iOS will be identified.

Beyond web browsing, the concept of a user agent can extend to other software applications that interact with services on behalf of a user. This might include automated scripts, bots, or client applications that communicate with APIs. In essence, a käyttäjäagentti is any piece of software that represents a user's request or action to another system.