Description from extension meta
Dualless - For those who don't have dual monitor.
Image from store
Description from store
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
Features
* 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.
The software is released under open source license of GPL 2.0
Changes
======
Releaser 0.4.1
Date: 2023-12-29
* Bug Fix - crash browser during split / merge
* Bug Fix - splitted window size is invalid
* Changes: Migrated to Extension V3 API
Release 0.4
* Added auto maximize mode
* After splitted, if one of the window close, the remaining one will be maximized to occupy all the space
* Added bookmark support
Release 0.3
* Now works with maximized window!
* Press middle key on split window button will duplicate the current page on other window.
* Vertical split is supported.
* Options page is added. User may enable/disable pairing mode(MacOS simulation)
* Ubuntu with Unity works better now
Latest reviews
- (2025-07-07) Elijah Proulx: good
- (2025-05-23) Ouguiya Treize: All my tab groups and pinned tabs are gone! I uninstalled immediately.
- (2025-05-20) Trent Annand: needs 5 stars
- (2024-11-20) Minh Nguyen: this is easy to work
- (2024-10-20) 色気米: Hello, can you support shortcut keys to switch back and forth between two split screens? For example, to switch between 7:3 (with the ability for users to customize this ratio) and 1. There is also a bug where, after selecting option 1 or closing a window, the window is not fullscreen; there are gaps around the window.
- (2024-08-09) Ryan Franks: I will change it to 5 once someone tells me how to turn it off, surely just selecting the 1 option ( merge two windows into a maximized window) is not the way, why is there no toggle where you can simply just turn it off once you want to go back to normal.
- (2024-05-12) Joseph Carter: woah chromebooks already do it
- (2024-02-12) Peter Yang: Great but give me hotkeys to split in two instead of having to use my mouse
- (2023-12-31) R S: Can't choose which windows out of several. It chooses for you. Very frustrating. Clicking the "1" box merges some other window at random into current one. This has no undo feature? Hitting the "1" multiple times merges all your windows into one, undoing your diligence in keeping tabs in separate windows. The window pairing function doesn't seem to work properly. All I need is to have two "NiftySplit" (see that extension) windows paired so that when one is active, the other appears on screen as well. This extension's options seem to imply that is possible, but it won't let me choose which two windows out of the available windows to use the extension on!
- (2023-11-27) Perfil Que Cresce: Crashing after open. It used to be very good, but now, not working anymore. W11.
- (2023-11-20) Chidi Moseri: Initially quite useful; now it crashes my browser each time I launch the extension
- (2023-09-22) AV Va: Thank you for the useful extension and blessings in Jesus Christ name
- (2023-09-22) AV Va: Thank you for the useful extension and blessings in Jesus Christ name
- (2023-09-16) Taavi Miku: Still not what I looking for. When splitted vertically (there's upper and lower part), It shows in the lower part a new browser window with address bar and everything else that wastes the screen's real estate.
- (2023-09-16) Taavi Miku: Still not what I looking for. When splitted vertically (there's upper and lower part), It shows in the lower part a new browser window with address bar and everything else that wastes the screen's real estate.
- (2023-05-06) for school but not from school: It crashed my browser (I am using Microsoft Edge btw)
- (2023-05-06) for school but not from school: It crashed my browser (I am using Microsoft Edge btw)
- (2023-03-19) Python Develop: As useless as 'Split Screen for Google Chrome', uninstall in 5 secs
- (2023-03-19) Python Develop: As useless as 'Split Screen for Google Chrome', uninstall in 5 secs
- (2023-01-27) Darek Gąsiorowski: Dualles destroys gruops of tabs - I've got 6 groups, each c.a. 20 tabs, now I've one window without groups :( "Split screen" extension does it better.Sometimes millions of users means nothing, especially for old extension without updates.
- (2023-01-27) Darek Gąsiorowski: Dualles destroys gruops of tabs - I've got 6 groups, each c.a. 20 tabs, now I've one window without groups :( "Split screen" extension does it better.Sometimes millions of users means nothing, especially for old extension without updates.
- (2023-01-01) Christopher D'Lamatter: Great idea but Windows 11 & Mac OS have features like this.
- (2023-01-01) Christopher D'Lamatter: Great idea but Windows 11 & Mac OS have features like this.
- (2022-11-28) Igor Skript: поехали все группы вкладок
- (2022-11-06) Frédéric HAUGUEL: Scinde la fenêtre en deux fenêtres et non pas en deux cadres au sein du navigateur. Ne sert donc strictement à rien.
- (2022-10-14) moi lois: great app
- (2022-10-14) moi lois: great app
- (2022-10-08) Juan Ignacio Jimenez Miranda: Rápido y cómodo para dividir la pantalla en varias zonas.
- (2022-10-07) Angela Gonzalve: Ive been using this for a little over a year or two. I loved it at first but now it won't stop glitching. If I use it now, it will close out all my tabs. Please fix this because I genuinely found it very helpful.
- (2022-10-07) Angela Gonzalve: Ive been using this for a little over a year or two. I loved it at first but now it won't stop glitching. If I use it now, it will close out all my tabs. Please fix this because I genuinely found it very helpful.
- (2022-08-28) Kelsey Aldersley: I had sorted my tabs into tab groups and it removed them all from their groups. 0/10.
- (2022-08-28) Kelsey Guo: I had sorted my tabs into tab groups and it removed them all from their groups. 0/10.
- (2022-06-15) David Duffield: It is a way to quickly adjust the size of two windows. It does not simulate two monitors as it claims. If it did, when I tried to maximize a window it would again put it in the pre-set layout. If I said to maximize a window, it would maximize it within the area/section it was in not back to your full monitor. Lastly, and something I didn't expect from it, you would be able to select a section/monitor to share during zoom or other screen shares. It does none of that. I'm sure it's fine for a different use case, but it doesn't do what it is advertised to do.
- (2022-06-15) David Duffield: It is a way to quickly adjust the size of two windows. It does not simulate two monitors as it claims. If it did, when I tried to maximize a window it would again put it in the pre-set layout. If I said to maximize a window, it would maximize it within the area/section it was in not back to your full monitor. Lastly, and something I didn't expect from it, you would be able to select a section/monitor to share during zoom or other screen shares. It does none of that. I'm sure it's fine for a different use case, but it doesn't do what it is advertised to do.
- (2022-04-19) Walace Camargo: Pode add a opção de 4 telas por favor?
- (2022-04-06) Necul Apeleo Felipe: esta ultra piola me sirvio demasiado el año anterior y espero que este igual, aunque no entiendo porque tiene acceso a mi historial kadkjnkd, seguro ya me robaron un monton de info pero en fin
- (2022-03-18) Ali Raza Jaffri (genius): Excellent Work. And it's very helpful extension.
- (2022-03-18) Ali Raza Jaffri (genius): Excellent Work. And it's very helpful extension.
- (2022-03-16) Cheryl-Anne: I had a bunch of important tabs open, including pinned tabs. Dualless stopped working, closed all tabs and there's no way to retrieve it from search history.
- (2022-03-16) Cheryl A: I had a bunch of important tabs open, including pinned tabs. Dualless stopped working, closed all tabs and there's no way to retrieve it from search history.
- (2022-03-08) ShadowLinAK: This program really helps me make windows smaller and bigger, however there is always a middle slot in the middle that the tabs do not cover.
- (2022-03-08) ShadowLinAK: This program really helps me make windows smaller and bigger, however there is always a middle slot in the middle that the tabs do not cover.
- (2022-02-17) Dux Nihilo: Literally, yes literally, pointless.
- (2022-02-17) Dux Nihilo: Literally, yes literally, pointless.
- (2022-01-12) rd _o: It is good but you can not pick what tabs if you have at of that's this makes it a 3 stars for me
- (2022-01-12) rd _o: It is good but you can not pick what tabs if you have at of that's this makes it a 3 stars for me
- (2021-12-09) Justin Muir: I love this
- (2021-12-09) Justin Muir: I love this
- (2021-11-15) Good Boy V0.7: Yeah it's a really good things but in Windows 11 it's now default feature for all of application!
- (2021-11-15) Good Boy V0.7: Yeah it's a really good things but in Windows 11 it's now default feature for all of application!