How to use: Enter any website URL in the box below and click Preview. The site will load in three device frames at once — Desktop (1280px), Tablet (768px), and Mobile (375px) — so you can compare how the layout responds across screen sizes, side by side. For example, try https://example.com.
Note: some websites block embedding in iframes (via X-Frame-Options or Content-Security-Policy headers). If a preview pane stays blank, that site does not allow embedding — try another URL.
Frequently asked questions
Is this responsive preview tool free?
Yes. The tool is completely free to use, with no sign-up and no limits. Enter any public website URL and preview it instantly.
Why is one of the preview panes blank?
Some websites send security headers (X-Frame-Options or Content-Security-Policy) that prevent their pages from being embedded in other sites. When that happens, the pane stays blank. This is controlled by the site you are previewing, not by this tool — try a different URL.
How accurate are the device previews?
Each frame renders the page at a true device viewport width — 1280px for desktop, 768px for tablet, and 375px for mobile — then scales the result to fit your screen. It is ideal for checking responsive layouts, but for pixel-perfect verification you should also test on a real device.
Why responsive preview matters
More than half of all web traffic now comes from phones and tablets, and Google ranks sites largely on their mobile experience. A page that looks perfect on a desktop monitor can be unreadable on a phone: text may overlap, menus can break, images can overflow the screen, and buttons can be too small to tap. Checking your site at real device widths before you publish is the fastest way to catch these problems — and this tool lets you do it in seconds, for free, without installing anything.
Responsive preview is not just for developers. Bloggers switching themes, store owners launching new pages, freelancers handing work to clients, and agencies doing pre-launch quality checks all benefit from seeing exactly what visitors on different devices will see.
How to use the tool: step by step
- Enter the full URL of any public website in the box above — for example,
https://example.com. - Click Preview (or press Enter). The page loads in three device frames at once.
- Compare the Desktop (1280px), Tablet (768px), and Mobile (375px) frames side by side.
- Scroll inside each frame and look for layout problems: overlapping elements, cut-off text, horizontal scrolling, or navigation that is hard to use.
- Fix what you find in your site’s code or theme, then preview again to confirm the fix.
What to check on mobile, tablet, and desktop
Mobile (375px)
- Text is readable without zooming or horizontal scrolling.
- Menus collapse into a working mobile menu and all links are reachable.
- Buttons and links are large enough to tap comfortably.
- Images scale down and never overflow the screen.
Tablet (768px)
- Multi-column layouts reflow sensibly instead of squeezing or breaking.
- Touch targets still work well — tablets are touch devices too.
- Sidebars, pop-ups, and banners do not cover the main content.
Desktop (1280px)
- Wide layouts use the space well without stretching text lines too long.
- Navigation, dropdowns, and hover effects behave as designed.
- Hero sections, sliders, and videos display at full size without distortion.
More frequently asked questions
Can I preview a site that is still in development?
Yes, as long as the development site is publicly reachable over the internet. Sites on your local computer (like localhost) or behind a login cannot be loaded in the preview frames.
Do you store the URLs I preview?
No. The tool runs entirely in your browser — the URL you enter is loaded directly into the preview frames on your device. We do not save or track the addresses you test.
Why do some sites refuse to preview?
Banks, large social networks, and many corporate sites deliberately block iframe embedding for security reasons. This is their choice, not a limitation of the tool. Any site that allows embedding will preview normally.