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Responsive Viewer

Preview the page at every viewport at once.

Preview the active URL in multiple device viewports side by side.

  • Side panel
Add to Chrome(opens the Chrome Web Store in a new tab)or pressCtrlShiftSpace
One Panel Search tools

Responsive Viewer

Side panel

Device presets

Ready01 / 03

01Features

What it does

  1. 01Device presets
  2. 02Side-by-side frames
  3. 03Custom sizes

02Use cases

When you'll reach for it

Spot breakpoints that break
Show a client the mobile layout

How to open it

  1. 1

    Side panel

    Click the One Panel icon in the toolbar and search for “Responsive Viewer”.

Privacy

  • Runs entirely inside your browser. No account, no analytics, no remote code.

Keep going

Pairs well with

Design

Color Converter

Convert colors between HEX, RGB, HSL, HSV, HWB and CMYK.

Design

Color Picker

Pick a color from the screen or a swatch, copy as HEX/RGB/HSL.

Design

Palette Generator

Generate complementary, analogous, triadic, monochromatic and random palettes.

Design

Contrast Checker

WCAG contrast ratio between foreground and background colors.

Design

Font Inspector

Hover any text on the page to see font family, size, weight, and line height.

Design

SVG Grabber

Extract inline SVGs from the page and copy as SVG or JSX.

Get Responsive Viewer and 80 more

One install adds every tool to your side panel. No account, nothing to configure.

Add to Chrome(opens the Chrome Web Store in a new tab)