ResponsiveKit

See any page on phone, tablet and desktop

ResponsiveKit shows any web page at several widths side by side, in one tab, so you can check a responsive layout without resizing your window again and again.

No account, no tracking, no servers. It asks for access one site at a time, only when you preview it. Read the policy

• 01

  Every width at once

  See the page at 390, 768, 1280 and 1440 px, or add your own widths and rotate to landscape.

• 02

  Synced scroll and clicks

  Scroll or click in one width and the others follow.

• 03

  Site breakpoints

  Find the widths where the page's own CSS changes layout and preview each in one click.

• 04

  Drag to resize

  Drag a width's edge to resize it; it snaps to the site's breakpoints.