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History of User Agent string

October 27th, 2010 | 1 Comment | Posted in Others, Web Development

If you are a web developer, you would have definitely seen the User Agent strings of the common web browsers. I have always wondered why the UA string began with Mozilla for browsers like Internet Explorer and Opera, which are not based on Mozilla code. I found the answer on WebAIM blog.

History of the browser user-agent string

This is the part that I liked the most

And then Google built Chrome, and Chrome used Webkit, and it was like Safari, and wanted pages built for Safari, and so pretended to be Safari. And thus Chrome used WebKit, and pretended to be Safari, and WebKit pretended to be KHTML, and KHTML pretended to be Gecko, and all browsers pretended to be Mozilla, and Chrome called itself Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/525.13 (KHTML, like Gecko) Chrome/0.2.149.27 Safari/525.13, and the user agent string was a complete mess, and near useless, and everyone pretended to be everyone else, and confusion abounded.

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