FREE TOOL
Responsive test
Free to use.
Preview a page at phone, tablet and desktop widths side by side, or set a width of your own.
Enter an address to see the page at phone, tablet and desktop width.
How to use the
Responsive test
Each step below matches what you see in the tool above.
Enter the address
Type or paste any public page. The tool checks it once to pick the best way to load it.
Compare the sizes
Phone, tablet and desktop load side by side. Add your own width or rotate any frame.
Switch to screenshots
If a page looks off live, or the site blocks framing, switch to screenshots for a rendered view.
What people ask
before they use it
Short answers on how it works and what happens to your data.
No. The tool is free and works without signing up.
Spotted a layout bug?
Comment on any viewport.
Free plan, no credit card. Reviewers never sign up.