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How To Change the User Agent String in Microsoft Edge, Chrome, Firefox, Opera, Internet Explorer or Safari

When you load a web page such as groovyPost.com, a list of checks are performed to determine the platform (macOS, Windows, Linux), web browser (Microsoft Edge, Chrome or Safari for iOS) and the system type (x86 PC, Galaxy Tab, iPhone/iPad). This helps web developers optimize their web pages for the different devices. You likely see the difference when you load our website in Microsoft Edge on a Windows 10 PC vs Chrome on an Android smartphone.

Certain elements of a web page you would find in a desktop browser are not always there in a mobile version; whether this is for easier navigation; or to ensure the page loads properly on the device. A feature of web browsers called the user agent string makes this happen. Web developers use this feature in their web browsers to test how their websites will look and work on different platforms without actually owning that device. This can also be useful for end users who might need to access a website not supported by their web browser. In this article, we show you how.

How to Modify Your Web browsers User Agent String in Windows 10, macOS or Linux

Microsoft Edge and Internet Explorer

There are several ways you can access the developer tools in Edge. The quickest way is to press F12 on your keyboard. Another way is from the More actions menu (…) > F12 Developer Tools.

Select the Emulation tab then click in the User agent string list box.

Choose an appropriate web browser you would like to test in. Both Edge and Internet Explorer support a variety of modes, including Opera, Safari, Firefox, and Chrome. When selected, the page you are browsing will be refreshed in real time, letting you see how it behaves in that particular web browser.

Google Chrome and Opera

In Chrome, you can open the Developer tools quickly by pressing Control + Shift + i. If you want to do it from the menu, click the Customize and Control menu located in the top right corner….

…then click More Tools > Developer Tools.

At the bottom of the window, click the vertical elliptical menu then click Network conditions.

Select the Network conditions tab then uncheck select automatically.

Click in the Custom list box then choose the desired browser mode.

Opera’s Developer Tools are based on Chrome, but accessing it is a bit easier. Click View > Show Developer menu. Click the Developer drop down menu then click Developer tools.

Mozilla Firefox

Unlike Chrome, Opera, Edge, and IE, Firefox doesn’t have a user-friendly way to quickly switch the user agent string. You have to enter the about:config settings then modify the useragent string manually.  If editing the configuration by hand makes you leery, I recommend you use a quick and easy add-on. Head on over to the Add-ons for Firefox website then search for user agent string.

There are quite a number of add ons for Firefox that let you modify the user agent string, but I found User-Agent Switcher to be the most widely accepted with many good reviews. There are add ons with similar names, so, look for the version with the globe icon and a network pipe attached. Click Add to Firefox.

Click Add.

Click the User Agent String icon in the add ons menu. Choose the desktop web browser and operating system platform to view the desired website. That’s all there is to it.

Safari on macOS

In Safari on macOS, you need to enable the Develop menu first. To do that, open the Safari menu > Preferences > Advanced tab. At the bottom of the window, check the box Show Develop menu in menu bar.

Click the Develop > User Agent then choose the desired web browser.

Conclusion

So, that’s how you can change or modify your web browsers user agent string. It’s not just for developers, it can actually be useful for scenarios where specific content is hidden that’s normally available on another platform. For instance, if you want to download ISO files directly from Microsoft’s Software Download page on Windows, Microsoft requires that you use the Media Creation Tool. But modifying the user agent string will let you download the ISO image directly if the page detects another platform such as Linux or macOS.

Did you find this tip useful? Let us know what you think in the comments.

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