Examine source code of Vimeo Video Downloader - Save MP4 HD Free

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "icons": {
    "16": "icon16.plasmo.6c567d50.png",
    "32": "icon32.plasmo.76b92899.png",
    "48": "icon48.plasmo.aced7582.png",
    "64": "icon64.plasmo.8bb5e6e0.png",
    "128": "icon128.plasmo.3c1ed2d2.png"
  },
  "manifest_version": 3,
  "action": {
    "default_icon": {
      "16": "icon16.plasmo.6c567d50.png",
      "32": "icon32.plasmo.76b92899.png",
      "48": "icon48.plasmo.aced7582.png",
      "64": "icon64.plasmo.8bb5e6e0.png",
      "128": "icon128.plasmo.3c1ed2d2.png"
    }
  },
  "version": "2.7.0",
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "background": {
    "service_worker": "static/background/index.js"
  },
  "side_panel": {
    "default_path": "sidepanel.html"
  },
  "permissions": [
    "scripting",
    "sidePanel",
    "tabs",
    "downloads",
    "webNavigation",
    "offscreen",
    "unlimitedStorage",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://vimeo.com/*",
        "*://*.vimeo.com/*",
        "*://player.vimeo.com/*"
      ],
      "js": [
        "vimeo.2e8816a4.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "css": []
    }
  ],
  "default_locale": "en",
  "host_permissions": [
    "*://vimeo.com/*",
    "*://*.vimeo.com/*",
    "*://*.vimeocdn.com/*",
    "*://*.akamaized.net/*",
    "*://*.cloudfront.net/*",
    "*://*.googleusercontent.com/*",
    "*://*.fastly.net/*",
    "*://*.akamaihd.net/*"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'"
  }
}