YouTube Aspect Ratio Control

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Resizer and aspect ratio changer for YouTube videos.

Latest reviews

• (2025-06-13) Daniel Stefanov: Only scales top of video, bottom black bar always remains.
• (2025-06-01) Shizuka: Honestly, what a stupid extension. It gives a bunch of presets but not one for 4:3, which is the most important one. It'd need to be approximately "104 H" if you wanted to convert videos that were originally a multiple of 224p tall to 4:3, but it's missing from the list. Even better than that would be simply giving the option to put your own custom preset, or removing all those useless presets and just putting "4:3 Stretch", "16:9 Stretch" and a few others, similar to the "UltraWidify" extension. It's a shame that one no longer works, cause it was perfect.
• (2024-12-08) Lawrence Friduss: Not enough customizability. I don't like that I can only select from presets - I need to be able to select my own ratios.
• (2024-11-12) Dominik Trujillo: This is an excellent little tool for the vast majority of use cases, and it just works. I've been using this to watch 4:3 videos on my 4:3 CRT and it's great. I've actually tested every obscure aspect ratio I could think of and I haven't found any that I haven't been able to correct with this extension. The only way to improve it is if you could make custom zoom and stretch options, because currently the highest zoom you can do is capped at 142%.
• (2024-09-29) Alex Keltov: Works. Although took me a while to get how to use it. You will see "100%" number next to Fullscreen icon. Tooltips on each setting showing what it is.
• (2024-06-29) Shreyas S: Can it be possible for Mobile
• (2024-06-21) Santosh Kumar: works perfectly even on 16:10 screen
• (2024-04-03) Neil Stirton: It either doesn't work, or there's no instructions supplied on how to actually turn it on. Restarted Chrome and my laptop, same result.
• (2024-02-20) David Whitehead: Very useful tool since people like to stretch the Aspect Ratio.
• (2024-02-02) Ultimate Gamer 99: Extremely useful extension, I hate when videos get aspect ratios wrong. Couple nitpicks tho, mainly that it doesn't reset after going to another video. I get some people like watching everything at the same aspect ratio tho so maybe just add it as an option? The other thing is, some options, like the 75% V, leaves black bars on the top and bottom. Would be extremely nice if it stretched to fit the screen (at least in theater mode). But otherwise this is perfection. (ignore the username this review is from, main google account wasn't letting me write 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.
• (2024-01-11) Alexandru Bogdan: not working anymore
• (2023-12-24) Vadermask: Can't get it to do anything. ??? I'm on my PC watching youtube in a tab, how do I apply these extensions and where are the instructions?
• (2023-12-18) wisesolm: Perfect in every way😎
• (2023-12-10) oxy.abdo999: THANK YOU SOOMUCH
• (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!
• (2023-10-28) 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
• (2023-10-20) 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
• (2023-10-14) 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) 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)
• (2023-08-04) 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 :)
• (2023-07-01) 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.
• (2023-06-06) 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
• (2023-06-04) Volodymyr Ant: Recently this extension stopped working, the video stretches correctly vertically, but compresses horizontally
• (2023-05-27) Patrick Supertramp: not working
• (2023-05-27) Patrick Supertramp: not working
• (2023-05-22) Bilel ZEGHAD: OK for youtube thanks
• (2023-05-22) Bilel ZEGHAD: OK for youtube thanks
• (2023-04-16) Peter Jambor: 16/04/2023 - works great, 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!
• (2023-04-15) 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 :(
• (2023-02-08) Juan Manuel Garcia: It's no longer working :(
• (2023-02-04) Saipaet: Can you make it have a shortcut key?
• (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.
• (2023-01-28) 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
• (2023-01-26) 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