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An Am I Responsive alternative that finds the bugs

Am I Responsive is a free web tool that loads your site in a phone, tablet, laptop and desktop frame on one screen: handy for a quick look or a portfolio image. It doesn’t tell you what’s wrong. UICheck tests the page at each size in a real browser, measures the problems and lists them with screenshots and fixes.

Side by side

What it isUICheck: Automatic responsive and layout QA for any URLAm I Responsive: Free preview of a site in four device frames
Screen sizesUICheck: Up to 7, plus a 320–1920px breakpoint sweep (Lens and Prism)Am I Responsive: Four fixed frames
Finds bugsUICheck: Yes, automaticallyAm I Responsive: No, you look for them
Sites that block framingUICheck: Tested in a real browser, so framing rules don’t matterAm I Responsive: Pages that forbid framing may not load
Device frame screenshotsUICheck: Yes, in the Live viewAm I Responsive: Yes, its main purpose
ReportUICheck: Plain-language fixes, share link without login, PDF and ExcelAm I Responsive: A screenshot

Based on public information, checked October 2026. Something changed? Tell us and we’ll update it.

Choose Am I Responsive if

  • You want a quick device mockup image of a site

Choose UICheck if

  • You want to know what’s broken, not just see it
  • Your site doesn’t load in frames
  • You need more sizes, Safari and Firefox, or a report

Or use both

Use Am I Responsive for a mockup image once the site is ready; use UICheck to make sure it is.

Also compare

Try UICheck next to Am I Responsive

Free account, 5 checks a day, no card. Paste a URL and see what it finds in about a minute.

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