Examine source code of KaliNotes

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "2.1.1",
  "default_locale": "en",
  "permissions": [
    "activeTab",
    "tabs",
    "scripting",
    "storage",
    "cookies",
    "notifications",
    "downloads",
    "https://kalinotes.com/*",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "contact@kalinotes.com",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "/content/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "sidebar_action": {
    "default_panel": "/popup/popup.html",
    "default_icon": {
      "16": "/icons/icon16.png",
      "48": "/icons/icon48.png",
      "128": "/icons/icon128.png"
    },
    "default_title": "Kalinotes"
  },
  "browser_action": {
    "default_icon": {
      "16": "/icons/icon16.png",
      "48": "/icons/icon48.png",
      "128": "/icons/icon128.png"
    },
    "default_title": "__MSG_openKalinotes__"
  },
  "icons": {
    "16": "/icons/icon16.png",
    "48": "/icons/icon48.png",
    "128": "/icons/icon128.png"
  }
}