Examine source code of TrueNote

{
  "name": "TrueNote",
  "description": "Permet de calculer ta vraie moyenne générale sur Pronote ou sur Mon bureau numérique.",
  "manifest_version": 2,
  "version": "2.2.0",
  "homepage_url": "https://github.com/AlfaXe08/TrueNote",
  "icons": {
    "32": "icons/TrueNote-icon-32x32.png",
    "128": "icons/TrueNote-icon-128x128.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_title": "TrueNote",
    "default_popup": "popup/index.html",
    "default_icon": {
      "32": "icons/TrueNote-icon-32x32.png",
      "128": "icons/TrueNote-icon-128x128.png"
    },
    "theme_icons": [
      {
        "light": "icons/TrueNote-icon-32x32.png",
        "dark": "icons/TrueNote-icon-32x32.png",
        "size": 32
      }
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4bdbf1ef-9494-4ba5-b270-e659e7bd3cde}"
    }
  }
}