käyttäjäagenttitiedon

Käyttäjäagenttitieto refers to the information a web browser or application sends to a web server about itself and the client system it is running on. This information is transmitted in the User-Agent HTTP header. The User-Agent string typically includes details such as the browser's name and version, the operating system, and sometimes the device type. For example, a typical User-Agent string might look like this: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36".

Web servers use this information for various purposes. It allows them to tailor the content or functionality of a website to the specific capabilities of the user's browser or device. For instance, a server might deliver a mobile-optimized version of a website to a user accessing it from a smartphone. Developers can also use User-Agent data for analytics, understanding their audience's browsing habits and the technologies they use. However, User-Agent strings can also be a privacy concern, as they can potentially be used to track users across different websites, although modern browsers have implemented measures to mitigate this. Websites can also be programmed to block or treat certain User-Agent strings differently, for example, to prevent scraping or to prioritize traffic from specific client types.