Examine source code of Easy Form Fill

{
  "manifest_version": 3,
  "name": "Easy Form Fill",
  "description": "Drag and drop items to form input fields",
  "version": "1.1",
  "icons": {
    "64": "images/logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "easyformfill@froomsoftware.com",
      "strict_min_version": "109.0"
    }
  },
  "action": {
    "default_popup": "popup/popup.html"
  },
  "background": {
    "scripts": [
      "js/service-worker.min.js"
    ]
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "css/content.min.css"
      ],
      "js": [
        "js/content.min.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "/icons/*.svg",
        "/icons/*.png"
      ],
      "extension_ids": [
        "easyformfill@froomsoftware.com"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}