YouTube Fullscreen Fit

Make the YouTube player fit all of your screen when opening fullscreen mode. NOTE: After installing, click on the extension and grant the authorization to access YouTube

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manifest.json

{
  "manifest_version": 3,
  "name": "YouTube Fullscreen Fit",
  "description": "Make the YouTube player fit all of your screen when opening fullscreen mode",
  "version": "1.3",
  "action": {
    "default_popup": "./ui/ui.html"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "js": [
        "script.js"
      ],
      "matches": [
        "https://*.youtube.com/*"
      ]
    }
  ],
  "icons": {
    "16": "./ui/assets/icon-16.png",
    "48": "./ui/assets/icon-48.png",
    "128": "./ui/assets/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "[email protected]"
    }
  }
}