Examine source code of Flexify

{
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    "gecko": {
      "id": "business@wiseai.dev"
    }
  },
  "action": {
    "default_title": "Flexify - Accessibility Tool.",
    "default_icon": "imgs/512.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "imgs/16.png",
    "32": "imgs/32.png",
    "192": "imgs/192.png",
    "512": "imgs/512.png"
  },
  "description": "A simple yet powerful A11Y tool that gives you the ultimate freedom to easily customize any web page with a click of a button.",
  "manifest_version": 3,
  "name": "Flexify",
  "permissions": [
    "tabs",
    "activeTab",
    "scripting",
    "storage"
  ],
  "short_name": "Flexify",
  "version": "0.1.6",
  "web_accessible_resources": [
    {
      "resources": [
        "/src/*",
        "/lib/*",
        "/data/*"
      ],
      "matches": [
        "<all_urls>"
      ],
      "extension_ids": []
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "/lib/jquery-3.6.3.min.js"
      ]
    }
  ]
}