Firefox change user agent web developer

I would use the "Responsive Design View" available under Tools -> Web Developer -> Responsive Design View. It will let you test your CSS against different screen sizes. It will let you test your CSS against different screen sizes.

From the "User-Agent Switcher Options" screen, you can create a new custom user-agent to add to the list. Option 2 - From Developer Tools Select the " Menu " button in the upper-right corner, then select " Tools " > " Developer tools ".

http://osxdaily.com/2013/01/16/change-user-agent-chrome-safari-firefox/

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https://wiki.gnome.org/Apps/Web/Docs/FrequentlyAskedQuestions https://www.fastvue.co/tmgreporter/blog/everything-you-need-to-know-about-user-agent-strings/ https://diarium.usal.es/pmgallardo/2019/01/29/how-to-make-microsoft-teams-video-calls-from-chrome-or-chromium-in-ubuntu/ http://alexking.org/blog/2015/04/23/user-agent-wp_remote_get https://venturebeat.com/2019/09/03/mozilla-firefox-69/

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Changing Browser User Agent Strings - ZYTRAX

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Firefox User Agents. We've got 123,282 Firefox User Agents in our database. This is a listing of only some of the most popular ones.

https://useragentswitcher.org/

How To Change the User Agent String in Firefox