Is there any way to do this? I'm trying to send a GET request to a website, but I want to customize my UserAgent. Is there any way to do this in pure HTML and JavaScript?
The user agent of a web browser is a string value which identifies that browser and provides certain system details to servers hosting the websites you visit. Changing the user agent string can be useful in certain scenarios when some web site's functionality is locked down to the specific platform and you need to bypass the restriction. It's not required to mention that changing the user agent can be useful for web developers. Here's how to change the user agent string in Mozilla Firefox. This can be done either with an extension or natively.
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Traditionally, the user agent string is used by web developers to optimize their web apps for different devices. This allows developers to differentiate various device classes like tablets, phones, Desktop PCs and laptops, and more. The user agent string can provide web servers some details about the user's operating system, and the browser version.
Firefox as of this writing ships with the new Quantum rendering engine. Also, it features a refined user interface, codenamed 'Photon'. The browser now comes without support for XUL-based add-ons, so all of the classic add-ons are deprecated and incompatible. See
Thanks to the changes made to the engine and the UI, the browser is blazingly fast. The user interface of the app is more responsive and it also starts up noticeably faster. The engine renders web pages much faster than it ever did in the Gecko era.
To change the user agent in Firefox, do the following.
- Open a new tab and enter the following text in the address bar:Confirm that you will be careful if a warning message appears for you.
- Enter the following text in the search box:See if you have such a parameter in the search results.
- If you don't have the value general.useragent.overridepreference, create it yourself. Right-click on the about:config page, and go to New -> String in the context menu.
- Name the new value as general.useragent.overridepreference. Hit the Enter key.
- Set the value data to the desired user agent.
Here are some typical user agent strings you can use.
Chrome on Linux:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36
Microsoft Edge:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2486.0 Safari/537.36 Edge/13.10586
Internet Explorer:
Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; AS; rv:11.0) like Gecko
More can be found on this web site: UserAgentString.com
The general.useragent.overridepreference option applies to every open tab in Firefox and persists until you change or remove it. It remains enabled even if you close or re-open the browser.
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Change the user agent in Firefox with an extension
If you are switching the user agent in Firefox frequently, you can save a lot of time and use the following extension:
User-Agent Switcher
Navigate to the link above and click on 'Add to Firefox'.
This add-on is a revived version of the classic and popular User-Agent Switcher and is written with web-extensions API. The old version can't be used in modern versions of Firefox. This one is compatible with Firefox Quantum.
That's it!
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Every time you load a website, your browser sends a request to load that page. Included in that request is a bit of data called a 'user agent'. This special bit of data identifies the web browser, operating system (and sometimes things like your phone or tablet) that you're using. This is what our homepage uses to detect your web browser.
How Do I Change The User Agent In Chrome
Normally, you don't need to change your web browser's user agent; you should leave it as it is; however sometimes power-users need to change their user agent to test a feature on a website or perhaps to get around a restriction that a website has implemented (perhaps blocking out Chrome users from an Internet-Explorer-only website..)
List of guides to help you change your user agent
(more guides are coming soon!)
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