Examine source code of Extract Video Link

{
  "manifest_version": 2,
  "name": "Extract Video Link",
  "version": "2.14",
  "icons": {
    "48": "icons8-bt21-koya-48.png"
  },
  "description": "Extract Video Link with aria2c support",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "<all_urls>",
    "storage",
    "tabs",
    "webRequest"
  ],
  "browser_action": {
    "default_icon": "icons8-bt21-koya-48.png",
    "default_title": "Extract Video Link",
    "default_popup": "popup.html",
    "browser_style": true
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bd3d8e6a-1518-40b9-92ff-e21f2d968152}"
    }
  }
}