Works in Brave (I don't have Chrome): while in full-screen mode, on menu bar untick View -> Always Show Toolbar in Full Screen.

Answer from Aivar Paalberg on Stack Exchange
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Apple Support
support.apple.com › guide › mac-help › use-apps-in-full-screen-mchl9c21d2be › mac
Use apps in full screen on Mac - Apple Support
Press Control-Up Arrow (or swipe up with three or four fingers) to enter Mission Control, drag a window from Mission Control onto the thumbnail of the full-screen app in the Spaces bar, then click the Split View thumbnail. You can also drag an app’s thumbnail onto another in the Spaces bar.
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Reddit
reddit.com › r/macos › a way to set window to fullscreen but remain windowed
r/MacOS on Reddit: A way to set window to fullscreen but remain windowed
September 8, 2023 - I need a maximize option that autohides both, but still does not use a dedicated screen. ... This is it here! When you hold option the green maximize button will change to a + and when you click it it will just expand the window to fill the space! Super useful! ... Window as a window won’t hide menu bar — it’s how MacOS window manager works! ... It feels like no one’s reading your post—or maybe they’re not fully understanding the issue. Let me try to clarify: OP wants to go "full screen" on a YouTube video, but instead of taking over the entire monitor, they want the video to go "full screen" within the browser window where they’re watching it.
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Apple Community
discussions.apple.com › thread › 255061396
Full Screen Mode Covering Tabs: How to fix - Apple Community
August 1, 2024 - Some of you might have noticed that if you full screen Chrome, then all your tabs will be covered. To solve this problem, you can simply go to View on the top of the screen (hover your pointer above it and it'll appear), and press Always Show Toolbar in Full Screen.
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Setapp
setapp.com › how-to › go-full-screen-and-exit-full-screen-on-mac
How to go full screen and how to exit full screen on your Mac
April 28, 2025 - If your Mac is running on Mac OS Big Sur or earlier, the fill screenshortcut is Command + Control + F to enter full screen. On Mac OS Monterey or later, you can also press fn + F or Command + Control + F. Alternatively, try Swish.
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Opera
forums.opera.com › topic › 19881 › tabs-on-fullscreen-mode-mac-os
Tabs on fullscreen mode (mac OS) | Opera forums
February 16, 2019 - I like full screen mode actually without all the tabs...but I think a better implementation would be to show the tabs when the mouse hits the edge of the top screen, and then dissapears when it hovers below. Anyway, it's super annoying. It's greyed out, and the only way I know how to fix it, is to restart opera, and then I can select the "Show Toolbar in Full Screen Mode" again. I have the same problem and I friggin swear to God I'll go back using Chrome if it's not fixed soon. ... I have this issue as well. macOS High Sierra 10.13.2 Macbook Air.
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SigmaOS
sigmaos.com › tips › browsers › how-to-go-full-screen-on-safari
How to Go Full Screen on Safari | Browser Tips | SigmaOS
For example, pressing "control" + "tab" will switch to the next tab, while pressing "option" + "command" + "right arrow" will switch to the next tab to the right. Full screen mode in Safari is highly customizable.
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YouTube
youtube.com › watch
A Better Way to Go Full Screen on a Mac - YouTube
Want to make a window fill the screen but still see the menubar? Here are multiple ways to do fill the screen without using full-screen mode.Download the fre...
Published   April 7, 2020
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Reddit
reddit.com › r/macos › how do you maximize windows in macos?
How do you maximize windows in MacOS? : r/MacOS
August 17, 2023 - I guess this is the best we can get with keys only. ... Not the best but the only real shortcut. And with time you can do it pretty fast ... In keyboard shortcuts, create 2 shortcuts each with the same keyboard combination. I use [CTRL+`]. Name the one "Enter Full Screen" and the other "Exit ...
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Intego
intego.com › home › how to enter and exit full screen mode and use split screen in macos
How to Enter and Exit Full Screen Mode and Use Split Screen in macOS - The Mac Security Blog
May 5, 2021 - Press Command-Tab and keep pressing Tab until you find the icon for the app you want to switch to, then release both keys. Swipe left or right with four fingers on a trackpad or Magic Mouse.
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MacMost
macmost.com › 13-tips-for-using-full-screen-mode-on-your-mac.html
13 Tips for Using Full Screen Mode on Your Mac
April 5, 2023 - If you take a window into Full Screen Mode by clicking the green button here or using View, and then Enter Full Screen, then what you're doing is actually creating another Desktop Space.
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Mozilla Support
support.mozilla.org › en-US › questions › 1254683
Unable to hide address bar + tabs in fullscreen on Mac—how to? | Firefox Support Forum | Mozilla Support
April 4, 2019 - As a Windows user, I don't completely understand how Firefox runs on Mac, but for what it's worth: Issue #1: If the cursor is in the address bar when you go to full screen, the toolbar area doesn't hide. Click out of the address bar, then exit full screen and enter it again. Issue #2: Firefox has a switch for whether to hide the toolbar area in fullscreen. You can double-check that here: (1) In a new tab, type or paste '''about:config''' in the address bar and press Enter/Return.
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CleanMyMac
cleanmymac.com › blog › full-screen-mac
How to full screen on Mac: an ultimate guide
December 12, 2024 - Select the View menu > Enter Full Screen. If you love keyboard shortcuts, then you'll be pleased to hear there's a Mac full-screen shortcut:
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iBoysoft
iboysoft.com › home › news tips › how to go full screen and exit full screen on mac
How to Go Full Screen and Exit Full Screen on Mac
January 13, 2026 - Open your app, click the View from the top menu bar at the top of your screen, and then select Enter Full Screen from the drop-down menu. There is also a keyboard shortcut that can enable you to enter full-screen mode quickly.