Examine source code of Cronofy

{
  "name": "Cronofy",
  "version": "0.22.42",
  "description": "Schedule directly from your browser tabs",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_idle",
      "js": [
        "content_scanner.js"
      ]
    },
    {
      "matches": [
        "https://*.cronofy.com/scheduler/browser_extensions/firefox/auth_complete*",
        "https://*.cronofy.com/scheduler/browser_extensions/firefox/auth_callback",
        "https://*.cronofy.com/scheduler/browser_extensions/firefox/welcome*"
      ],
      "js": [
        "auth_callback.js"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "16": "assets/icon-color-16.png",
    "48": "assets/icon-color-48.png",
    "128": "assets/icon-color-128.png"
  },
  "permissions": [
    "storage",
    "*://*.cronofy.com/*"
  ],
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{875ecb07-877d-4c3d-98d5-ffbad1df45f5}",
      "data_collection_permissions": {
        "required": [
          "personallyIdentifyingInfo",
          "websiteContent",
          "browsingActivity"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  },
  "browser_action": {
    "default_icon": "assets/icon-color-48.png",
    "default_title": "Cronofy"
  },
  "sidebar_action": {
    "default_icon": "assets/icon-color-48.png",
    "default_panel": "popup.html",
    "default_title": "Cronofy",
    "open_at_install": false,
    "browser_style": false
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}