Examine source code of Screen Sizer

{
  "manifest_version": 3,
  "name": "Screen Sizer",
  "version": "1.0.0",
  "description": "Resize your browser window to mimic different screen sizes. Save, manage and share presets with your team.",
  "permissions": [
    "storage",
    "activeTab",
    "tabs"
  ],
  "action": {
    "default_popup": "src/popup/popup.html",
    "default_icon": {
      "16": "src/icons/icon16.png",
      "48": "src/icons/icon48.png",
      "128": "src/icons/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "src/background/service-worker.js"
    ]
  },
  "icons": {
    "16": "src/icons/icon16.png",
    "48": "src/icons/icon48.png",
    "128": "src/icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "screen-sizer@extension",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}