Open the form on a mobile device
The most straightforward way is to open your form's public URL directly on your phone or tablet. This shows you exactly how respondents will experience it.
💡 Not sure where to find your form's public URL? See how to find, customise, and share your form's public URL
Preview mobile layout in your browser
If you'd like a quick preview without switching devices, you can simulate a mobile screen directly in your browser using its built-in developer tools.
Open your form's public URL in your browser,
Right-click anywhere on the page and select Inspect (or press F12),
Click the device/responsive mode icon — it looks like a phone and tablet — in the toolbar at the top of the developer panel,
The page will switch to a mobile layout. You can also pick a specific device or screen size from the dropdown at the top:

