Examine source code of Cookie Editor

{
  "manifest_version": 2,
  "name": "Cookie Editor",
  "version": "1.0",
  "description": "Ein einfacher Cookie-Editor zum Anzeigen, Bearbeiten und Löschen von Cookies",
  "permissions": [
    "cookies",
    "tabs",
    "activeTab",
    "<all_urls>"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    },
    "default_title": "Cookie Editor"
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "applications": {
    "gecko": {
      "id": "cookie-editor@qscqscqscqs.de",
      "strict_min_version": "60.0"
    }
  }
}