Mozilla offers examples of strings to be used for crawlers: Most browsers send a user agent header in the following format, though there’s not much consistency in how user agents are chosen: User-Agent: Mozilla/5.0 () ()Įvery browser adds its own comment components, such as platform or RV (release version). The server can then use this information to adjust the response for the type of device, OS, and browser. For example, the string tells the server you are using the Chrome browser and Windows 10 on your computer.
The user agent string helps the destination server identify which browser, type of device, and operating system is being used. A user agent (UA) string is a text that the client computer software sends through a request. The term refers to any piece of software that facilitates end-user interaction with web content. Tips to avoid getting your user agent banned when scraping.
