Examine source code of Bookmarkify

{
  "manifest_version": 3,
  "name": "Bookmarkify",
  "description": "Bookmark anywhere on a web page",
  "version": "1.0.7",
  "icons": {
    "16": "img/icon_16.png",
    "48": "img/icon_48.png",
    "128": "img/icon_128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "./js/content.js"
      ],
      "css": [
        "./css/style.css"
      ]
    }
  ],
  "action": {
    "default_icon": "img/icon_16.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "js/background-script.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d2729221-0a67-47cd-922c-40bf79765e9b}"
    }
  }
}