Preview any site
as a phone.
A browser extension that simulates 24+ mobile devices in any tab. Real user agents, touch events, color schemes, and network throttling — zero setup, zero tracking.
features
Everything you need to test mobile.
Built on Chrome DevTools Protocol. No external tools, no fake user agents — real device emulation in any tab.
iPhone, Galaxy, Pixel, iPad, OnePlus, Xiaomi.
Real viewport sizes, DPR, and stock user agents. Switch in one click, rotate to landscape, or pick from the sidebar with instant search.
Throttle the connection.
Simulate Slow 3G, 4G, or no network at all. CDP-backed, no proxy required.
- No throttling0ms · —
- Fast 4G20ms · 15 / 7.5
- Slow 4G150ms · 1.6 / 0.75
- Slow 3G400ms · 0.4 / 0.4
One-click screenshots.
Grab the simulated viewport as a PNG, at the device's actual pixel ratio.
Light, dark, auto.
Force prefers-color-scheme on the page being tested, independent of your system.
Spoof the browser too.
Render as mobile Chrome, Firefox, or Safari — sites that gate on UA can't tell the difference.
Stays in your browser.
No analytics, no telemetry, no remote config. Source code is on GitHub — audit it yourself.
- No tracking
- No accounts
- No ads
- MIT licensed
No tracking
Zero analytics, zero telemetry
No accounts
Install and use, no sign-up
MIT open source
Audit the source, fork the code
Install
Free, forever. Two clicks away.
Available soon on the Chrome Web Store and Firefox Add-ons. Until then, build it from source — it's a one-liner.