Examine source code of Streetify

{
  "manifest_version": 2,
  "name": "Streetify",
  "description": "The biggest price comparison site in the world",
  "version": "5.8",
  "browser_action": {
    "default_icon": "icon128.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*",
        "<all_urls>"
      ],
      "exclude_matches": [
        "https://docs.google.com/*",
        "https://sharepoint.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end",
      "match_about_blank": false,
      "all_frames": false,
      "css": [
        "streetify.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "web_accessible_resources": [
    "images/*"
  ],
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "http://*/*",
    "https://*/*",
    "unlimitedStorage",
    "cookies"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "liam@remiam.co.uk",
      "strict_min_version": "53.0"
    }
  }
}