Examine source code of Prospeo - Email Finder

{
  "manifest_version": 2,
  "name": "Prospeo - Email Finder",
  "description": "Find contact info from anywhere for free, and verify them with the highest accuracy.",
  "version": "1.6.0",
  "browser_action": {
    "default_title": "Popup",
    "default_popup": "index.html",
    "default_icon": "logo.png"
  },
  "content_scripts": [
    {
      "js": [
        "assets/main.tsx-loader.6d009176.js"
      ],
      "matches": [
        "*://*.linkedin.com/*",
        "*://*.prospeo.io/*"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "css": [
        "assets/slide.d9015cf4.css",
        "assets/main.5a865cea.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "service-worker-loader.js"
    ],
    "persistent": false
  },
  "permissions": [
    "tabs",
    "cookies",
    "storage"
  ],
  "host_permissions": [
    "https://www.google.com/*",
    "*://*.linkedin.com/",
    "*://*.prospeo.io/"
  ],
  "icons": {
    "16": "logo.png",
    "48": "logo.png",
    "128": "logo.png"
  },
  "externally_connectable": {
    "matches": [
      "*://*.linkedin.com/*",
      "*://*.prospeo.io/*"
    ]
  },
  "web_accessible_resources": [
    "assets/no-email-found-ube.e16fa608.png",
    "assets/question-mark-free.eb16d643.svg",
    "assets/auth-bg.90ddae9b.svg",
    "assets/domain-footer.d8b0429a.svg",
    "assets/slide.0268162b.js",
    "assets/_sentry-release-injection-file.92c63b5a.js",
    "assets/main.tsx.c3e9e92f.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{741473c8-f1c5-46f3-87cd-a00baede89bc}"
    }
  }
}