WebExtension to watch YouTube videos without the distracting cruft around it, in the full window.
It simply redirects visits to e.g.
To view a full-window video in its usual crufty context, click the extension’s icon. It will then remain deactivated in that video’s tab.
Works, ready to use.
The extension is available for Firefox and Chromium/Chrome/Brave/etc.
For Firefox and its derivatives, find it on Mozilla Addons.
For Chromium and its derivatives, unfortunately it is no longer available on the Chrome Web Store, as it “was in violation of branding guidelines”. To install it, download the extension, rename the file to end with
.zip instead of
.xpi so Chromium understands it. Then open
about:extensions, turn on developer mode, then drag the zip file onto that page. (it may mention an error because of an unknown field in the manifest file, but should still work)