We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

How to conviently switch between desktop and mobile view of websites?

  • 4 uphendule
  • 2 zinale nkinga
  • 1 view
  • Igcine ukuphendulwa ngu cor-el

Benji.Hobson
Benji.Hobson
more options

I use the FF desktop browser but wish to access to mobile view of some website. Ideally this would be possibly on a by-tab basis.

I'm aware of the user agent switcher but find it cumbersome having to manually define a user agent for every website.

Thanks a lot for your suggestions.

I use the FF desktop browser but wish to access to mobile view of some website. Ideally this would be possibly on a by-tab basis. I'm aware of the user agent switcher but find it cumbersome having to manually define a user agent for every website. Thanks a lot for your suggestions.

All Replies (4)

guigs
guigs
more options

There might be an add on that does this, please search at addons.mozilla.org

Benji.Hobson
Benji.Hobson Umnikazi wombuzo
more options

The only add-on that I have found is:

https://addons.mozilla.org/en-US/firefox/addon/ua-site-switch/

However, one has to change the user-agent based on whether one wants to see the desktop or mobile web page version. I'm sure there must be an easier way to do this and would be grateful for pointers in the right direction.

guigs
guigs
more options

HI Benji.Hobson, If you are a developer, there is also the developer tool called "Responsive Design View" however it does not change the user-agent header afaik.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

A possibility could be to use the PrefBar extension and create an Extcheck button to swap the general.useragent.override pref between two values.