How To Manually Change User Agent Firefox

Posted : admin On 12/27/2021

This document describes the user agent string used in Firefox 4 and later and applications based on Gecko 2.0 and later. For a breakdown of changes to the string in Gecko 2.0, see Final User Agent string for Firefox 4 (blog post). See also this document on user agent sniffing and this Hacks blog post. How can I change the default save location to sd card android How to sync bookmarks FROM android TO desktop? How can I save all the settings I have made in 'about: config'.

  1. Change Browser User Agent
  2. How To Manually Change User Agent Firefox Quantum
  3. Firefox Change User Agent String
  4. Firefox Latest User Agent
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A user agent is a line of code that tells websites what type of browser and operating system you're using. This information helps the web server deliver content that's compatible with your browser.

You can change Firefox's user agent to trick outdated websites into thinking that you're using a different version of the browser. Web developers might do this to see how their websites will appear on different versions of a browser. Sometimes, add-ons and other installations can change your user agent without your knowledge. In any case, it's important to switch it back to the default user agent to display most websites correctly.

To view your user agent, click the Firefox menu button , click Help and select Troubleshooting Information. This will open a page with the address about:support. The Application Basics section will include a User Agent entry. For example, the default user agent entry for Firefox 68 on Windows 7 (64-bit) would appear as:
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0

Change Browser User Agent

Note: If your user agent shows a previous Windows version, such as NT 6.0 (Windows Vista) instead of NT 6.1 (Windows 7), make sure you are not running Firefox in Compatibility mode. You can open the Properties of the Firefox desktop shortcut from the right-click context menu. Check the 'Compatibility' tab and make sure that all items are deselected in the 'Compatibility' tab of the Properties window.

How To Manually Change User Agent Firefox Quantum

Dec 06, 2019  In order to provide almost perfect emulation of User-Agent values, User Agent-Switcher bundles a stripped-down version of BrowsCap. This allows us to derive all relevant JavaScript navigator. browser/OS identification values from just a single value: The User-Agent value you enter (and a bit of magic behind the scenes). Other extensions with a.

To reset your user agent:

How To Manually Change User Agent Firefox

Firefox Change User Agent String

  1. In the address bar, type about:config and press EnterReturn.
    A warning page may appear. Click to continue to the about:config page.
  2. Search for useragent by typing it into the Search field.
  3. Right-clickHold down the control key while you click on each of these preferences, if they exist, and select Reset from the context menu.
  1. In the address bar, type about:config and press EnterReturn.
    A warning page may appear. Click to continue to the about:config page.
  2. Search for useragent by typing it into the Search preference name field.
  3. Click the Reset or Delete button on each of these preferences, if they exist:

Firefox Latest User Agent

  • general.useragent.extra.firefox
  • general.useragent.extra.productName - where productName can be the name of some third party software (e.g. microsoftdotnet).
  • general.useragent.locale
  • general.useragent.override
  • general.useragent.security

See Configuration Editor for Firefox for more information about using the about:config page to reset or delete preferences.

After resetting your user agent, you may need to clear your cookies and cache:

  1. Click the Library button , click and select .
  2. In the Time Range to clear: drop-down, select Everything.
  3. Click the arrow next to Details to display the list of items that can be cleared.
  4. Select both Cookies and Cache.
  5. Click .
  1. Click the Library button , click and select .
  2. In the Time Range to clear: drop-down, select Everything.
  3. Below the drop-down menu, select both Cookies and Cache.
  4. Click .