Examine source code of TubeFinder

{
  "manifest_version": 2,
  "name": "TubeFinder",
  "version": "2.0.2",
  "description": "TubeFinder : Recherchez des vidéos YouTube en un clic. Rapide, simple et personnalisable.",
  "author": "Voyzix",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "icons": {
    "16": "img/youtube_16.png",
    "32": "img/youtube_32.png",
    "48": "img/youtube_48.png",
    "128": "img/youtube_128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "img/youtube_16.png",
      "32": "img/youtube_32.png",
      "48": "img/youtube_48.png",
      "128": "img/youtube_128.png"
    }
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+Y"
      },
      "description": "Open TubeFinder"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tubefinder@voyzix.example.com",
      "strict_min_version": "79.0"
    }
  }
}