Examine source code of NOTEME.IO - WEB CLIPPER

{
  "manifest_version": 2,
  "name": "noteme.io",
  "description": "Bookmarks Manger. Notes. ToDos",
  "version": "4.0.8",
  "icons": {
    "16": "assets/icons/icon-16x16.png",
    "32": "assets/icons/icon-32x32.png",
    "48": "assets/icons/icon-48x48.png",
    "128": "assets/icons/icon-128x128.png"
  },
  "homepage_url": "https://noteme.io",
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "hotkeys.min.js",
        "contentScript.js"
      ],
      "css": [
        "noteme.css"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "assets/icons/icon-48x48.png",
    "default_title": "NOTEME.IO"
  },
  "omnibox": {
    "keyword": "nms"
  },
  "commands": {
    "open-app": {
      "suggested_key": {
        "default": "Alt+N"
      },
      "description": "This command is used for open https://noteme.io in browser new tab"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "contextMenus",
    "notifications",
    "*://*/*",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "assets/styles/*",
    "assets/icons/*",
    "assets/lib/*",
    "assets/*/*",
    "assets/*",
    "noteme.html",
    "noteme.js",
    "constants/*",
    "noteme.scss",
    "icon-a.svg",
    "icon-b.svg",
    "icon-c.svg",
    "icon-d.svg"
  ]
}