Examine source code of Mark And Note

{
  "name": "Mark And Note",
  "description": "Mark, comment, share and discuss",
  "version": "2.1.1",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "dist/assets/background.js"
    ]
  },
  "permissions": [
    "storage",
    "activeTab",
    "contextMenus",
    "<all_urls>",
    "clipboardWrite"
  ],
  "browser_action": {
    "default_icon": {
      "16": "dist/assets/icons/logo-16.png",
      "48": "dist/assets/icons/logo-48.png"
    },
    "default_popup": "popup.html",
    "default_title": "Mark and Note"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*"
      ],
      "js": [
        "dist/assets/content-script.js"
      ],
      "css": [
        "extracss/extra-content-page.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "dist/assets/icons/*",
    "dist/assets/fonts/Noto_Sans/*"
  ],
  "icons": {
    "16": "dist/assets/icons/logo-16.png",
    "48": "dist/assets/icons/logo-48.png",
    "128": "dist/assets/icons/logo-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{314b9ac8-3d4e-41fb-8a20-bc839e0b6965}"
    }
  }
}