Chrome DevTools device mode or Breakpane: when each one is enough

The short version

• Stay with Chrome’s device mode if you check layouts now and then, work on a single screen with the browser open beside your code, or need the rest of DevTools (network, performance, Lighthouse) in the same window. It’s free and already installed.
• Use Breakpane if you want the device always in front of your editor while you code, with a frame, the Safari or Chrome toolbar, each iPhone’s safe areas and installed-app mode, without opening DevTools each time.

Side by side

Data from each product’s official docs and repository, checked on October 21, 2026.

	Breakpane	Chrome DevTools device mode
Platforms	macOS 13 or later, Windows 10 and 11	Wherever Chrome runs (Windows, macOS, Linux, ChromeOS)
Price	$9 a month or $79 a year, with a 14-day free trial, no card	Free
Where it shows up	Its own window, floating over the desktop and always on top	Inside the Chrome tab, with DevTools open
Framed devices	Yes: 41 framed devices (iPhone, Android, foldables, tablets, laptops and monitors) plus a custom one	Optional (“Show device frame”), only for devices that have frame art
Browser toolbar	Safari or Chrome toolbar drawn in, taking the height it takes on the device	Not mentioned in the docs
Safe area (notch, home indicator)	Yes, with each device’s measurements	Not mentioned in the device mode docs
Installed PWA mode	Yes: App mode (standalone) and a Home Screen with your app icon	Not in device mode; Chrome installs the PWA as a desktop window
Live localhost	Yes: opens your dev server directly and finds the projects in your folder	Yes: it’s the tab your dev server is already open in
Coding agents (MCP)	Yes, in Beta: a local MCP server that opens framed devices, taps, scrolls and audits	Yes: Chrome DevTools MCP emulates viewport, touch and user agent, and much more (network, performance, Lighthouse)
Debugging tools	PWA diagnosis and audits through the agents; DevTools for the rest	All of DevTools: elements, console, network, performance, Lighthouse
Real Safari	No: the engine is Chromium	No: the engine is Chromium

Where Chrome’s device mode is stronger

• It’s free and already there. Nothing to install or pay for, and it works on any system that runs Chrome, including Linux and ChromeOS.
• All of DevTools in the same window. Inspect elements, watch the network, profile performance, run Lighthouse and throttle CPU and network without leaving the emulated device.
• DevTools MCP goes beyond layout. Chrome DevTools MCP gives the agent network, console, performance, memory and Lighthouse, on top of viewport emulation.

Where Breakpane is different

• The device stays in front, not in a tab. Device mode lives inside the browser: when you go back to your editor, it disappears behind it. Breakpane floats above your editor, always visible, and updates on every save.
• The whole device, with its measurements. The frame, safe areas, pixel density and the Safari or Chrome toolbar taking the height it takes on a phone. The device list shows each one’s viewport and resolution.
• The installed app. In App mode your site opens as an installed PWA (display-mode: standalone), at phone size, and the Home Screen shows your manifest icon.
• Several devices at once. An iPhone, an Android and a laptop open side by side, each in its own window.

How to decide

If you look at the phone layout once a day, Chrome’s device mode is enough. If you spend the day tuning layouts for phones, try Breakpane for 14 days: the gain is not having to open anything to see the result. Both run on Chromium, so neither replaces iPhone Safari; the guide How to test a website on iPhone without a Mac explains how to get to real Safari.

Sources

• Chrome DevTools device mode: developer.chrome.com/docs/devtools/device-mode, checked on 2026-10-21.
• Chrome DevTools MCP and its tool reference: github.com/ChromeDevTools/chrome-devtools-mcp, checked on 2026-10-21.
• Breakpane pricing: breakpane.com/en/pricing. Devices: breakpane.com/en/devices.