extension ExtPose


CRX id


Description from extension meta

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

Image from store Dualless
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

  • (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.
  • (2023-05-06) 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
  • (2023-01-27) 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.
  • (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
  • (2022-10-08) 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.
  • (2022-08-28) Kelsey Aldersley: 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.
  • (2022-04-19) 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.
  • (2022-03-16) 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.
  • (2022-03-08) 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.
  • (2022-01-12) 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) Chill Vibes: 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!
  • (2021-11-09) Max Castillo: Extremadamente útil gracias
  • (2021-11-08) Nicky: É prático, gostei muito. Porém não sei o que acontece que as vezes tento usar e não funciona, nem ao menos a extensão abre..
  • (2021-10-11) Valk: Absolutely useless, if you run windows you can drag a window to the side of the screen and it will automatically fill half your screen (50%). I can drag 3 apps on my monitors resolution. We don't talk about apple since I dont use it.
  • (2021-09-22) _MemoryCore_: It's really nice, it's handy. Only thing kinda gets confusing
  • (2021-08-20) Coal Freida Rock: 🦄
  • (2021-08-17) LAKSHMI RAAJA SRI R D: lovved ittttt sooooooooooooooooo much
  • (2021-08-01) DCMX: simply cleaver
  • (2021-07-18) eros: It works great and is great for an incoming high school student- however the thing that I will critique is that it is a bit hard to use when it comes back to trying to use jsut one tab.
  • (2021-07-17) Nicole Sung: I love this for the minimalist UI but unfortunately it ungroups all my tab groups so I'll have to uninstall..
  • (2021-07-09) iniakun komputer: tapi mengapa sekarang tidak berfungsi layaknya saat pertama kali mengaplikasikannya ya?
  • (2021-05-26) Penny &Dime: pressing windows key+left/right does the same thing and you can do it with every app. useless
  • (2021-04-13) Nancy Veronica: awesome
  • (2021-03-24) Zainab javed: I love this extension instead of using two monitors i can simply now use one monitor!! I love this :)
  • (2021-03-20) Siew Jia Xuan: I love this extension very much ! It provides an excellent function that is useful for us ! Thank you Dualles !
  • (2021-02-28) NIcholas Foord: Great
  • (2021-02-07) Nathassia Sabado: Really helpful for us with just one monitor to work with. I hope we can get the option to personalize the dimensions aside from the ones already available.
  • (2021-02-06) HIMANSHU GOYAL: It's indeed helful but on splitting it doesn't keep my tabs group intact. So, when I am splitting I have to go back and put all tabs again into that group.
  • (2021-01-25) Ace: its pretty good actually, but its okay i just want to get stick around with my drag into the side one
  • (2021-01-21) Nishant Dobariya: wow.............................................
  • (2021-01-12) JM Chan: is good but once I open it it doesn't open for one that is google and one that is firefox and it doesn't work sometimes
  • (2021-01-12) ABADY: Great ..
  • (2020-12-18) C Tang: cant work with powerpoint files
  • (2020-12-16) Byrthe: Great app that serves its purpose. But it sometimes crashes my computer when I want to split my screen
  • (2020-12-01) Ning Cao: good!
  • (2020-11-26) Emiliano Cárdenas: Muy buena extensión
  • (2020-11-17) Rain Man: Does what computers can already do but worse, just drag your window to the side.
  • (2020-11-10) Sage Alstroemeria: Can easily do class work thanks so much~
  • (2020-11-05) Ranjan Dhungel: Isn't this feature done by windows snap feature already ?

Latest issues

  • (2023-11-09, v:0.4) Mackenzie Czar: Crashing browser each use since update
    like the description says
  • (2023-10-30, v:0.4) Carmen Viljoen: Closes my browser
    Hi there, Every time I try use the extension it closes all my tabs and closes my browser. It has been happening for 2 weeks now. What is going on?
  • (2023-10-25, v:0.4) Yuridia: Crashing Extension
    when I try to spilt my screen with the extension it crashes and exit's me out of google chrome, deleting all my tabs that I had open. If there is a way this could get fixed that would be awesome, because now it has become unreliable for me to use, fearing that I may be doing something that isn't able to save and then using the extension it deletes the work I was completing and it not being saved
  • (2023-10-23, v:0.4) Paul Brown: Dualless no longer working?
    Hi, Dualless crashes on selection in Chrome Version 118.0.5993.89 (Official Build) (64-bit). Any workaround or fix? Thanks.
  • (2023-10-23, v:0.4) Nat: Crashes
    Every time I try to use it, all of my tabs close.
  • (2023-10-19, v:0.4) hallee crawford: Crashes Browser
    Every time I try to use the extension and use dual screens, it crashes my browser and does not work.
  • (2023-09-02, v:0.4) Bryan Tan: not working
    here's the one im using now and it really works. https://chrome.google.com/webstore/detail/dual-windows-updated/npnmdlaheifodkaaopfimkkdmkdhlhhg
  • (2023-04-17, v:0.4) Adrianus Vilters: web maken
    web site doet het niet
  • (2022-12-26, v:0.4) Jessi Crease: Someone has added this without my ability to access it
    I can't remove it or access it and they are affecting the size of my screens
  • (2022-11-17, v:0.4) Albert: Why do you access our browser history
    I was wondering why we should give the access of our browser history to you what is the point related to split screen tab and browser history access ?
  • (2022-09-07, v:0.4) MARIANA SANCHEZ RICO: It's not working
    I've been trying to use it all week and it does not even give the ratio options.
  • (2022-09-03, v:0.4) Veronica Jaimes: No salen las opciones de división
    No me funciona la extesión. Al hacer el click en opciones de división, me aparece en blanco.
  • (2022-03-08, v:0.4) Lewis Nida: Setup
    how to setup with chromebook and secondary screen an android device .
  • (2022-01-21, v:0.4) DROdio: Is it possible to have two panes change sizes at once?
    I'd love to know if it's possible to use Dualless to change two groups of panes at once. Here's an example: https://s.drod.io/v1uLYqPd I'd like to be able to just click the right side and have both panes adjust to fill 100% of the screen. Possible?
  • (2021-10-06, v:0.4) atjan gurbanmyradow: oyun
    neden oynamiyor
  • (2021-08-11, v:0.4) Helen Martin: box in right corner of this chromebook
    This box with small icons just showed up on my screen out of nowhere and I cannot get rid of it. I do not know what it is
  • (2021-08-09, v:0.4) D. P.: Unathorized Install by 3rd party
    Never seen or heard of this app until I saw it in a tab that was not visited by me.
  • (2021-08-09, v:0.4) D. P.: Unathorized installation/install attempt
    I've never seen, heard, or used your product before. Showed up in one of my tabs..my account is being used by a 3 party.
  • (2021-07-09, v:0.4) gheorghe Honciuc: [email protected]
  • (2021-06-05, v:0.4) Dan: Closes tab groups
    Hello! I've been using this extension for more than 6 months now and I love it! Whenever I split screen it closes my tab groups... can you please fix that?
  • (2021-04-08, v:0.4) Doane Castro castro: MEU DUALLES NAO ABRE
  • (2021-03-15, v:0.4) Marguerite Pedersen Lowak: Privacy Policy
    Mr. Lau, Do you have a privacy policy for the Dualless Chrome extension? Marguerite Lowak
  • (2021-01-12, v:0.4) Paul Mores: Please fix the share this tab feature. I am a public school teacher with special needs students. Without this working I have to reload each screen to share....this distracts my students and wastes minutes off my lessons ...please put back feature!
    "'share this tab" does not work anymore
  • (2021-01-12, v:0.4) Paul Mores: Share tab does not work
    Share tab no longer works
  • (2020-12-10, v:0.4) Sandi Sersen: Dualless not working
    I use dualless on my pc at work and downloaded it to my HP laptop since it is so easy to use. I can't use it. The screen flases and nothing happens. I can't drag a tab down to split the screen either. Any ideas as to what is causing this? Thanks
  • (2020-11-09, v:0.4) Julyana Leite: Não consigo instalar o programa no meu pc.
    Já faz mais de uma semana que eu venho tentando e nada. Já tentei com outras contas não deu certo, mas quando eu fui tentar em outro computador funcionou. Sempre aparece a mensagem "Falha na verificação de vírus", e eu já mudei as minhas configurações.
  • (2020-10-30, v:0.4) Sarp akan Ercan: SARP AKAN ERCAN
  • (2020-10-30, v:0.4) Sarp akan Ercan: SARP AKAN ERCAN
  • (2020-10-30, v:0.4) Sarp akan Ercan: SARP AKAN ERCAN
  • (2020-10-30, v:0.4) Sarp akan Ercan: SARP AKAN ERCAN
  • (2020-10-04, v:0.4) Laura Schepperley: Can't get rid of the "you are Presenting" screen when using Dualless.
    When using Dualless, how do I get rid of the "you are Presenting" screen on the Participant screen? It is a great extension, but that screen takes up the majority of the screen!
  • (2020-09-08, v:0.4) Adriana Berova: Extension acquisition
    Hello there, As I was not able to reach you directly, I am hoping I find you well and that here you will see this request. After going thoroughly through your extension I have noticed some interesting features. Therefore, the company that I am representing has great interest in making a great deal for both parties. In case you have some further questions do not hesitate to contact me anytime. I anticipate your response! Kind regards, Adriana Berova
  • (2020-09-04, v:0.4) Deborah Canales: Extension Permissions
    Hello, Just trying to vett the privacy and permissions for this extension for my organization. Does Dualless require any permissions whether os, browser or google read/write? Does it obtain any data via the usage?
  • (2020-08-21, v:0.4) Caroline Fitzpatrick: Make split screen invisible to participants during screen sharing
    I love the ability to split my screen, but it would be really useful for me to be able to present something in Google Meet and split my screen so that I can see both my presentation AND the faces of my students in the Meet. (Currently once you present you lose the view of the participants.) HOWEVER, I don't want the meeting participants to see my split screen. I want them ONLY to see my presentation. It would be great if Dualless added this function.
  • (2020-08-12, v:0.4) Gerry McLaughlin Consulting LLC: no icon?
    I downloaded the dualless , went to chrome started the google meets but no icon for dualless seen?
  • (2020-07-16, v:0.4) Y. C.: stopped working
    stopped working! i need this for remote teaching
  • (2020-06-17, v:0.4) Jerry Kearns: Which windows/tabs are split?
    Hi, love the program, but I can never figure out which windows or tabs will be split! Sorry, but I'm a multiple windows/multiple tabs kind of user. I'm happy to adapt - how can I set it up such that will know in advance which will be split? Thanks very much!
  • (2020-06-16, v:0.4) Shamina Ramesh: dualless
    installed dualless but the screen started flickering and then had to switch off the lappie. pls resolve. I need this extension urgently.
  • (2020-06-14, v:0.4) Shamina Ramesh: DUALLESS
  • (2020-06-13, v:0.4) Joseph Leopard: Pinned tabs and Tab groups not honoured when splitting screen
    When I use Dualless to split my Chrome tabs, pinned tabs are no longer pinned. Also the newer Tab Groups feature in Chrome only keeps the first tab in the group. The other tabs are removed from the tab group.
  • (2020-06-08, v:0.4) Tulio Pimenta: Nao Funcionando
    Ola, Instalei em meu mac, mas nao esta funcionando. Nao aparece as opcoes de dual tela.
  • (2020-06-06, v:0.4) parshant kumar: opening regarding issue
    it many a times opens very slowly even though my other extensions get opened quickly .please fix the issue
  • (2020-06-04, v:0.4) Camile Alba Rodrigues: Política de privacidade
    Qual a política de privacidade da extensão? Ela coleta dados do navegador enquanto estiver ativa, e isso não é correto. Poderia me enviar a sua política de privacidade?
  • (2020-05-29, v:0.4) María del Pilar: No funciona
    Hola. No funciona la nueva actualización desde ayer. Ojalá puedan darle pronta solución. Gracias
  • (2020-05-27, v:0.4) Does not work with new update
    Hello does not seems to work with new update.
  • (2020-05-06, v:0.4) Nichol Murillo: No me funciona la extención
    Instalé la extención pero no funciona, no muestra nada ni las opciones para poner la pantalla, me sale el menú en blanco
  • (2020-01-28, v:0.4) Kristin Sordi: Privacy policy - Coppa
    Please send me your privacy policy so that I may determine if follows COPPA and I can add this extension for students. [email protected]
  • (2020-01-28, v:0.4) Kristin Sordi: COPPA - Privacy Statement
    Privacy Statement We are a K-3 school with 1:1 Chromebook student deployment. This is a great tool for students- however we need a statement listed that states you are not collecting the browsing history -I understand you need that permission to split the screen but if you are not actually collecting browsing history - you can list that as a privacy issue and then it would allow students under 12 to use.
  • (2019-11-21, v:0.4) Barbara Flyntz-Bradley: Privacy Statement
    We are a K12 public school district with 1:1 Chromebook student deployment. We would love to allow our students to use this tool to better utilize their small screens, but we cannot legally do so without a Privacy statement. Could you possibly post one? I'm sure there are other Google for Ed districts that would deploy Dualless if you had an acceptable a Privacy statement posted. Thank you.
  • (2019-10-30, v:0.4) Vicki Mather: flashes wildly on screen
    When I open this app my screen flashes wildly and won't stop. I have to shut my computer down o stop it. why is it not working?


1,000,000 history
3.9734 (263 votes)
Last update / version
2023-12-29 / 0.4.1
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