What is the User-Agent and what information does it pass?ĭescribed in the HTTP standard, the User-Agent string contains a number of tokens that refer to various aspects of the request, including the browser’s name and version, rendering engine, device’s model number, operating system and its version, etc.įrom a web developer’s perspective, User-Agent strings can be useful when it comes to testing how online content is rendered on various hardware and software combinations. Here’s a handy list of UAs that you may want to use. In order to get an understanding of which mobile browsers use your site, you need to know their User-Agent strings. This information typically passes the name and version of the browser among many other details.
The standard way to pass information to the server about the visiting device is to include it in the User-Agent (UA) string.
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