Examine source code of Get Cookies

{
  "action": {
    "default_area": "navbar",
    "default_icon": {
      "16": "favicon-16x16.462b1bd6.png",
      "32": "favicon-32x32.7902b4f5.png",
      "180": "apple-touch-icon.c2b84a02.png",
      "192": "android-chrome-192x192.8861330a.png",
      "512": "android-chrome-512x512.8bed924c.png"
    },
    "default_popup": "popup.e8380387.html",
    "default_title": "__MSG_extensionName__"
  },
  "author": "Uiolee",
  "browser_specific_settings": {
    "gecko": {
      "id": "{2dd9ed48-f8c2-49c6-af63-1497e5c38763}"
    },
    "gecko_android": {
      "id": "{317dfb2a-a2a2-4c60-aaaf-866cbff4145f}"
    }
  },
  "default_locale": "en",
  "description": "__MSG_extensionDescription__",
  "homepage_url": "https://github.com/uiolee/get_cookies",
  "host_permissions": [
    "<all_urls>"
  ],
  "icons": {
    "16": "favicon-16x16.462b1bd6.png",
    "32": "favicon-32x32.7902b4f5.png",
    "180": "apple-touch-icon.c2b84a02.png",
    "192": "android-chrome-192x192.8861330a.png",
    "512": "android-chrome-512x512.8bed924c.png"
  },
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "optional_permissions": [
    "activeTab",
    "cookies",
    "<all_urls>"
  ],
  "options_ui": {
    "open_in_tab": false,
    "page": "pages/options.html"
  },
  "permissions": [
    "activeTab",
    "cookies"
  ],
  "version": "0.6.1"
}