Page Size & Load Time
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Measure a web page's HTML size, response time, resource counts, and third-party host list.
Mobile-Friendly Tester
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Preview any website at iPhone, Android, iPad, and desktop sizes. Check your responsive design instantly.
Mobile-Friendly Tester
Sites with X-Frame-Options: DENY will show a blank preview. Use browser DevTools (F12 → Toggle Device) for those.
Preview—
About This Tool
Devices Included
- iPhone SE (375×667)
- iPhone 14 Pro (393×852)
- Samsung Galaxy (412×915)
- iPad (768×1024)
- iPad Landscape (1024×768)
- Desktop (1280×720)
Sites with strict X-Frame-Options cannot be previewed in iframes. Use Chrome DevTools for those.
Frequently Asked Questions
Why is the preview blank?
The site sends X-Frame-Options: DENY or SAMEORIGIN, blocking iframe embedding. Use Chrome DevTools (F12 u2192 Ctrl+Shift+M) for a guaranteed local preview without restrictions.
Is this the same as Google's mobile-friendly test?
No u2014 this is a visual layout preview. Google's test scores page speed and mobile-friendliness via Lighthouse. Use Google's PageSpeed Insights for ranking-related mobile checks.
Can I test different screen orientations?
Yes u2014 select iPad Landscape (1024u00d7768) for landscape, or Portrait (768u00d71024) for portrait. The iframe doesn't trigger orientationchange events though.