Examine source code of SEO Analysint

{
  "name": "__MSG_title__",
  "short_name": "Woorank",
  "version": "2.2.2",
  "manifest_version": 2,
  "description": "__MSG_description__",
  "homepage_url": "https://www.woorank.com",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "default_locale": "en",
  "browser_action": {
    "default_icon": "icons/icon48.png",
    "default_title": "__MSG_title__",
    "default_popup": "src/browser_action/browser_action.html"
  },
  "key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC+FAdjHobxPdeyHvwJIc3oSSUIIGuI3SIiWKuLiSaqugqKxPB6TbKgO4KtSCGCw9WG0uNn+2WINbfvqRAVA5T8LL1Rs2JWy2OVyUN+vGmDXvvU3zMnHOOzi2SOXLpwGhGxSS8IHZPzokiWCuQldTwWYTKQpcux1zR1zQL1oi/Z6wIDAQAB",
  "permissions": [
    "activeTab"
  ],
  "offline_enabled": false,
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "58.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{9bdfc939-1e0f-47c1-bca6-196b7aeb0e42}"
    }
  }
}