Samestate

One interaction, every device.

Compare responsive layouts side by side and mirror clicks and scrolling.

  • Click syncMatches controls by their position in the page structure.
  • Difference reportLists what changes per device: hidden content, tables, tap targets, overlays.
  • Sample siteExplore the bundled demo at different screen sizes.

Preview scale

100% shows the page at its viewport size in CSS pixels. Physical size depends on your display.

Physical size

Measure this line from end to end on your monitor.

Preview note