extension ExtPose

YouTube Aspect Ratio Control

CRX id


Description from extension meta

Resizer and aspect ratio changer for YouTube videos.

Image from store YouTube Aspect Ratio Control
Description from store An extension that allows users to view YouTube videos in the correct aspect ratio if they weren't properly encoded by the uploader.

Latest reviews

  • (2024-01-14) Γκουρτζιόβα: Τέλεια εφαρμογή,αλλά δυστυχώς σταμάτησε να δουλεύει. Ανανέωση: Ξαφνικά μετά απο 1 χρόνο, Ιανουάριος 2024,άρχισε να δουλεύει κανονικά.Είναι μοναδικό.
  • (2023-10-28) Stephen Wylie: I like playing old-time (1960s & 70s) TV shows on old-time TVs. This extension (plus a special HDMI to RF modulator I have) works great for getting rid of the black bars on YouTube videos caused by my output device not adjusting properly to a 4:3 aspect ratio. No more having to painstakingly download & crop videos!
  • (2023-10-23) Тоха Семёнов: мусор...
  • (2023-10-20) Evan DeIacova: Doesn't work in split screen mode on mac. All the options just disappear. No way to stretch video top to bottom of screen
  • (2023-10-14) bioLarzen: Worked fine until now - today I noticed it disappeared. From "Ryan's"comment (6 June 2023) I learned that it does reappear once I reload the video - which is not really a hassle, as I only use this extension once in a while (but then it's VERY handy to have), jsut thought I'd let the dev know there seems to be a minor issue. Win 10, Chrome 118.0.5993.70
  • (2023-09-10) Bolek Lolek: must have for 16:10
  • (2023-09-10) KILLERPRIEST: Не работает должным образом. Срезает просто края и после каждого нового ролика слетает.
  • (2023-08-04) Peter Malar: Please, make hotkey for easy activate / deactivate. (not uninstall from chrome... just deactivate, so there is no "100%" sign in player)
  • (2023-07-01) Mustafa UTKAN: Thank you very much I use ultrawide,other for blocking black side videos but not fixing however This extension is very helpful :)
  • (2023-06-06) Ryan: dont know what happened maybe cus of an update but i keep having to reload all youtube videos to get this thing to work. never happened before until recently for me.
  • (2023-06-04) Volodymyr Ant: Recently this extension stopped working, the video stretches correctly vertically, but compresses horizontally
  • (2023-05-27) Patrick Supertramp: not working
  • (2023-05-22) Bilel ZEGHAD: OK for youtube thanks
  • (2023-04-16) Peter Jambor: 16/04/2023 - works great, thanks
  • (2023-04-15) Derek Kirby: As of 4/15/2023 this extension is working fully! It wasn't working since December 2022.hooray!
  • (2023-02-08) Juan Manuel Garcia: It's no longer working :(
  • (2023-02-04) Saipaet: Can you make it have a shortcut key?
  • (2023-01-28) Alen: It was fantastic. RIP Jan 2023. Google has done something with Chrome so this doesn't work anymore.
  • (2023-01-26) Александр Блоцкий: Great extension. I've been using for several years. But on version 109, it began to stretch the video vertically, instead of scaling. Please fix it
  • (2023-01-20) Craig: No longer working
  • (2023-01-16) bharghav T: But not sure it's stopped working from 16/Jan/2022 , Before it was charm
  • (2023-01-14) Aleksejs Ļevčenkovs: Dont works to the Chrome 109
  • (2022-11-17) THGhost2013: It doesn't do anything.
  • (2022-11-15) Abdullah Nadeem: Best Extension ever 😍
  • (2022-11-13) No Way: This does nothing. There are no instructions on how to change the aspect ratio and by itself it does nothing.
  • (2022-11-13) DURAI VJ: i tried many extensions to hide black bars on youtube videos.. nothing worked.. but this one worked perfectly.
  • (2022-09-05) user 26: fits for 1280x1024 laptop / monitors too
  • (2022-06-11) SrError: No puedo ocuparla
  • (2022-06-10) Adam Smith: Works as described. Many thanks.
  • (2022-05-11) zeranzeran: Been using this for years and it never lets me down. Excellent extension, thank you! I love being able to stretch the video to match whatever monitor size I'm on, or to remove the black bars from older videos. This works PERFECT, and has many options to choose form. Great job.
  • (2022-04-22) Flynn Taggart: half of the options are unavailable due to the button and the pop up menu being on the far right of the player, cutting off half of the options.
  • (2022-04-09) Joe Houghton: The only extension that works properly for my ultrawide monitor
  • (2022-03-04) agustin mendieta: cumple excelentemente su función
  • (2022-02-20) TEE VEE: This is one of the best extensions of all time, been using it for a few years now and dread the day it stops working because people STILL upload stretched widescreen footage and other aspect ratio oddities, I can't do without it. I also use it to crop videos to fit my browser window (in conjunction with another extension that fits the video dimensions to your display like a psuedo-fullscreen within Chrome, a common feature in many YouTube enhancement extensions) when appropriate eg solo podcasts with a centered host, no more letterboxing!
  • (2022-02-14) Mahin Ahnab: Thankyou for your kind offering 🙏 now I can watch badly cropped old gems.
  • (2022-02-10) Igor Martins: Awesome extension! Any plans on extending it to Twitch?
  • (2022-01-09) Daniel R.: I`m very happy found this extension. We can choose from loads of options, stretch only Width or only Height or both.. nice,nice,nice. Improvements I could imagine is that the percent of the zoom is fully editable and this extension could be supported on Netflix too.
  • (2022-01-05) L u H: Possuo Monitor 16x10. Essa extensão permite que o video ocupe toda a área da tela, sem faixas pretas. É perfeito. Recomendo.
  • (2021-12-06) César: Please add the option for 80% and others
  • (2021-11-17) Михаил Костриков: Не работает
  • (2021-10-12) angus young: It'd be a brilliant addition to anyone who loves movies - It doesn't work - icon remains grey and in a nut shell " out of service " . I'm using the iron browser - so it shouldn't be an issue ?
  • (2021-09-10) Integrity Beats: Doesnt work.
  • (2021-09-08) Ridle: Works great. Just hope it has aspect ratio as the label like 4:3, 16:9, etc.
  • (2021-08-13) Alex Wong: Doesn't give fine control, instead only shows preset options.
  • (2021-07-25) Avith Ortega: works perfectly, wanted to see Olympics Stream but the picture was wider and couldnt enjoy it properly, now I can fix it!
  • (2021-07-24) La Folia: Really good if you have 21:9 3440 x 1440P monitors Just wished he releases a Netflix one because I haven't seen anyone which stretches the video horizontally, it's always zoom to fill in the gap.
  • (2021-07-15) Drew Win: Wow this extension is totally underrated! It's the easiest to use compared to all the other aspect ratio related extensions. Well done dev(s)!
  • (2021-07-08) hvhiep ga: ok
  • (2021-07-03) Matt - NZ: With this Youtube Aspect Ratio Control, would the ratio controls be the same if downloading it from Youtube itself? Otherwise its a very good tool if you don't to see any watermarks on the bottom of the youtube videos.
  • (2021-07-02) Janusz Dajojski: it works good but its little bit to complicated, we need so much fast use button controll to change resolutions easy, now i need to try every resolution to fit screen with mouse and save it. But still good program, now i can use my 16:10 with full pottential

Latest issues

  • (2023-04-12, v: salih: Otamatik Boyut Yapma
    Her Video da Otamatik 100 Döüyor Oysa Ben 133 h da Tutmak istiyorum Sürekli Sürekli Değişiyor Yardımcı Olabilir misiniz?
  • (2023-02-25, v: Roary “Roars”: Something (YouTube) is forcing the standard aspect ratio in full screen
    overriding your extensions change to the aspect ratio while in full screen. please continue to support this niech but useful tool.
  • (2023-02-12, v: Azymack Renato: Same problem as this guy JP, Posted jan 30, 2021.
    Not working. It's stuck at "regular fullscreen size" not larger, but can be smaller...It zooms past 100% only when not at fullscreen.
  • (2023-01-16, v: bharghav T: Stopped working
    Team it's stopped working
  • (2022-08-03, v: Theios Savage: monitor compatibility
    i have a 35 ich monitor and it works perfectly, but i have a question, would the 142 % work on odyssey g9 [32:9 monitor]
  • (2022-06-19, v: Keith (cklx622): Make this available on Firefox again
    This was deleted on Firefox. Please support Firefox too
  • (2022-06-10, v: Daniel Rem.: Firefox
    Please make it for firefox. I like this extension
  • (2022-01-18, v: Felice: Associate the video ID from the URL with the most recent setting?
    I assume you have some way to save stuff to local storage. Can you save a table/dictionary/map that takes the video ID from the URL and returns the most recent custom aspect ratio? Anything not stored in the map would be assumed to be 100%, so it would only contain stuff set by hand, and you'd delete anything that was set back to to 100%, so it shouldn't eat up too much local storage space for the average user.
  • (2021-07-10, v: WSS: 118%
    Hi, could you add 117/118% into the selection. It would be perfect for the Huawei Matebook 14. Now with it at 116%, there are still a slight black space on top & bottom. God bless!
  • (2021-06-27, v: Krish: ultrawide monitor support
    I cannot seem to make it work on a 34" ultrawide monitor. Could you please help?
  • (2021-01-30, v: JP: Not working for me
    Hi, can you help me please the extension is not working, I put any size and it doesn't change anything. Actually I also had, until yesterday, a script in Tampermonkey that I could play with HTML5 videos (size speed etc) But it stopped working all of a sudden( I include this info so that maybe it could help with disgnosing the issue. Videos can be set to decrease in size but as soon as the size get to the actual fullscreen size, it won't zoom in anymore, it's stuck at "regular fullscreen size" not larger, but can be smaller...so weird! Please can you help me it would be very nice, it was so great to play with videos, I liked it fast and now I feel I have lost a major feature in my PC! 😊 Best regards
  • (2021-01-04, v: andrew mansberger: Menu is mostly hidden
    The Percentage/menu button appears on far-right of control bar, so the menu pops up in an area where the overflow is mostly hidden. I cannot see what I'm selecting - aside from that it works perfectly! (Although, it did take me about 15 minutes to find the Percentage/menu button..)
  • (2020-06-21, v:1) youngsoo go: There is one thing I want.
    It is the best app. There is one thing I want. Don't select a ratio every time running YouTube. Let's us save favorite ratio as default settings.
  • (2020-04-19, v:1) Karol Olszanowski: Settings saving, options labels.
    I wish i could set default settings for all videos + priority option for each chanel. Another thing is aspects options label, would be nice if i could switch to more precis x:y (with V or as extra button) ratio label instead of x%.
  • (2020-02-16, v:1) Peter Bacon: Extension shows the percentage twice.
    Extension still has full functionality, but sometime this past month it changed so it now shows the percentage twice.
  • (2019-08-11, v:1) Vasiliy Sirovatsky: 32:9
    Add 150% pls for 32:9
  • (2019-03-17, v:1) M Masri: Add 80% H option please.....
    Can you please add 80H% option, because when i watch 16:9 in 4:3 i cant reach the best aspect ratio. 85H% is too wide and 75H% ist too short.
  • (2019-02-26, v:1) Just another guy who wants hotkeys
    Sincerely, an entitled user
  • (2019-01-13, v:1) Business Cheems: Keep settings?`
    Can you make it keep the settings you set before? Id like to keep the same resolution for ALL videos. =)
  • (2018-12-18, v:1) Ceekur: 18:9 crop to 16:9
    Nice and simple to use. Could you consider adding a percentage that crops those 18:9 videos down to 16:9? It looks like it should be 112.5% or something. That's my current use-case, because apparently everyone watches videos on their phone nowadays.
  • (2018-08-27, v:1) how to use
    Hi, I have a video in youtube and I ant to change its aspect ratio to 21:9 cinematic look, or something close to it, but now I downloaded the extension I don't know how to use it, help me please.
  • (2018-08-17, v:1) Steven Groves: Save settings
    Is there a way to save the setting. Currently it resets back to 100% with each new video.


10,000 history
4.3577 (137 votes)
Last update / version
2020-08-04 /
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