Examine source code of Windscribe - Free VPN and Ad Blocker

{
  "manifest_version": 2,
  "name": "Windscribe - Free Proxy and Ad Blocker",
  "short_name": "Windscribe",
  "version": "3.4.14.3",
  "description": "Windscribe helps you mask your physical location, circumvent censorship, and block ads and trackers on websites you use every day",
  "default_locale": "en",
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Windscribe"
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "<all_urls>",
    "proxy",
    "management",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "activeTab",
    "storage",
    "unlimitedStorage",
    "contextMenus",
    "privacy",
    "webNavigation",
    "notifications",
    "cookies",
    "browserSettings"
  ],
  "background": {
    "page": "background.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*",
        "file://*/*"
      ],
      "js": [
        "/browser-polyfill.min.js",
        "/content-scripts/geolocation-spoofing.js",
        "/content-scripts/language-switch.js",
        "/content-scripts/proxy-time.js",
        "/content-scripts/worker-block.js",
        "/js/vapi.js",
        "/js/vapi-client.js",
        "/js/contentscript.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    },
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "/content-scripts/get-iframes.js",
        "/js/scriptlets/subscriber.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    },
    {
      "matches": [
        "https://windscribe.com/*"
      ],
      "js": [
        "/content-scripts/get-creds.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "options_ui": {
    "page": "options-ui/index.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "/web_accessible_resources/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "91.1.0",
      "id": "@windscribeff"
    }
  }
}