Screen Resolution Tester
Loads a URL side by side at Mobile, Tablet, Laptop, and Desktop resolutions, so you can compare how a page looks at each size.
Some sites block being shown in a frame (via X-Frame-Options or a Content-Security-Policy), in which case that preview will stay blank — this is a restriction the target site sets, not something this tool can bypass.
Mobile (375×667)
Tablet (768×1024)
Laptop (1366×768)
Desktop (1920×1080)
How it works
Enter a URL and click Load.
Frequently asked questions
- Why is one of the previews blank?
- Some sites set an X-Frame-Options header or a Content-Security-Policy that blocks being displayed inside a frame at all, regardless of what tool is trying to show it. That is a restriction the target site sets, not something this tool can bypass.