Dualless - For those who don't have dual monitor.

Dualless promo image
What is Dualless?

Dualless is a Chrome extension that acts as a substitute for dual monitor setups. It splits the browser window into two by just 2 clicks, with adjustable ratios based on user preference. The extension supports several features including merging and resizing the split windows, simulating MacOS X like window management and bookmark management. It's an ideal tool for those who require extensive space for multitasking, aiding in creating a more conducive and tailored workspace.

Stats date:
By: Ben Lau
Rating: 3.99 (263)
Version: 0.4 (Last updated: 2020-11-19)
Creation date: 2013-08-24
Manifest version: 2
  • tabs
Size: 225.28K
Email: Click to see
URLs: Website
Risk impact: Moderate risk impact
Risk likelihood: Very low risk likelihood

Other platforms

Not available on Firefox
Not available on Edge

Dualless is a poor man's dual monitor solution. It splits your browser windows into two by just 2 clicks. The ratio can be adjusted according to your needs.You may have a browser window showing on the right that occupy 30% of your screen. Then the rest of space leave to Google+.

The extension simulates the environment of dual monitor. Utilize the space for 16:9 monitor


  • Split current browser window into a pair. And resize their position and size according to the ratio specified by user. (3:7,4:6,5:5,6:4,7:3)

  • Merge splitted browser windows back to a single window , or make it occupy the full screen area.

  • MacOS X like windows management. When one of the splitted windows got focused, the other in pair will be shown together. They always occupy the whole screen.

  • Press middle key on split window button will duplicate the current page on other window.

  • Bookmark management. Relaunch your favior site in a new tab and windows will be splitted in the recorded ratio.

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User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Useful for splitting screen
  • Quickly adjust size of windows
  • Helpful in teaching during the pandemic
  • Crashes browser
  • Removes tab groups
  • In Windows 11 and Mac OS, similar features exist by default
  • Wastes screen real estate
  • Does not simulate two monitors as advertised
Most mentioned
  • Crashes
  • Useful for splitting screen
  • Removes tab groups
  • Windows 11 and Mac OS features
View all user reviews
Risk impact

Dualless may not be safe to use and it requires some risky permissions. Exercise caution when installing this extension. Review carefully before installing.

Risk likelihood

Dualless has earned a good reputation and can be trusted.

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Promo images
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