Test on Mobile Devices with Firefox

Test on Mobile Devices with Firefox

This guide teaches you how to use the Device Mode to approximate how your page looks and performs on a mobile device within Firefox.

Limitations

With Device Mode you simulate the mobile user experience on your computer. This means, there are some aspects that the browser isn't able to simulate precisely. There can therefore be a few corner cases where the rendering will be different in the simulation mode vs on a real phone.

Open the inspector in Firefox

First, right-click an empty area on your website and select Inspect Element from the drop-down.

   

Simulate a mobile viewport

Click Toggle Device Toolbar    to open the UI that enables you to simulate a mobile viewport.

Figure 1. The Device Toolbar

By default, the Device Toolbar opens in Responsive Viewport Mode.  

 

Mobile Device Viewport Mode

To simulate the dimensions of a specific mobile device, select the device from the Device list, which is on the top bar of your viewport mode.

 

 Figure 2. The Device list

Rotate the viewport to landscape orientation

Click Rotate  to rotate the viewport to landscape orientation.

 

Figure 3. Landscape orientation

 

🎉🎈Congratulations 🎈🎉  

You now know how to inspect your website with the simulation of a mobile device with Firefox.

 

Notification

If you need assistance on, how to preview your page from a mobile-perspective in another browser, please select your browser:

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