This document describes the user agent string used in Firefox 4 and later and applications based on 2. Windows, Mac, Linux or Android , and whether or not it's a mobile phone. In recent browsers, geckoversion is the same as firefoxversion. But that has not been possible since. Webpage designers are simply lazy, and they attempt to block visitors from using specific browsers, because they want to use the easier framework which is only supported by certain browsers. So you get the user agent string like follows on Chrome browser. Now different browser generate this information in their way.
A few common examples are given below. It probably makes sense to consider this to be the same as Chrome. The first two digits are owned by the Mozilla product team and denote versions with new features eg: v1. For example, the library is a fantastic and simple way of detecting features. Some Gecko-based browsers may not opt into using this token; for this reason, sniffers should be looking for Gecko — not Firefox! For example, it may have been hijacked from its true owner. You may sort or limit this list by selecting from the menus below. See , , or from the same region.
What is User Agent sniffing? Android versions 4 and above will report the version accurately. See below for further details and examples. For a breakdown of changes to the string in Gecko 2. To use these, just load them into a map or array structure in your middleware language or log-processing framework, and lookup the right column based on the left input from the UserAgent: header field. So Why does it have Mozilla, Chrome and Safari, and not just Edge in it? You can find this information on for different browsers. It also is a deliberate design decision to limit the usefulness of user-agent checks.
Mobile and Tablet indicators Only from Firefox 11 onwards. . Klar Version Rendering Engine User Agent string 1. The web is the platform. Avoid inferring materials based on these. Note that many of these have not yet been released on Gecko 2. The recommended way to do this, if it's absolutely necessary remember that it slows down every request is to.
Note that the same Gecko—with the same capabilities—is shipped to all versions of Android. There are ways to develop your web site to progressively enhance itself based on the availability of features rather than by targeting specific browsers. It's fast, free, easy, and one of the ways you can help make the Internet a better, safer place. There is no way to tell from the UserAgent: header if the browser is actually Chrome. You can review more information on For c you can refer to Most of these are Chrome, but not all. Mozilla explains it well on their blog: Serving different Web pages or services to different browsers is usually a bad idea. I'm trying to analyze my web server logs, and check which users accessed it from a Chrome browser on a desktop computer.
To track harvesters and other malicious robots visiting your own website, with Project Honey Pot today. That is done on purpose. An for this page is available. Focus Version Rendering Engine User Agent string 1. For increased interoperability, if the browser is running on a version below 4 it will report 4. See also this document on and this. And confusion abounded excessively on the face of the web.
If you do this, your site will almost certainly break in the future. Windows Windows user agents have the following variations, where x. In the past, specific plug-ins, add-ons or extensions added user agent parts to notify sites they were installed. . . . .
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