Examine source code of Minimal Distraction Mode

{
  "manifest_version": 2,
  "name": "Minimal Distraction Mode",
  "version": "1.0",
  "description": "Hide distracting elements like images and videos for a text-focused browsing experience.",
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icons/icon.png"
  },
  "icons": {
    "48": "icons/icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1020dfa4-803b-4b08-8969-2ea7f29c03a4}"
    }
  }
}