Examine source code of Lorem Express

{
  "manifest_version": 3,
  "name": "Lorem Express",
  "icons": {
    "16": "images/icon-16.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "version": "1.0.2",
  "description": "Quickly generate and insert Lorem Ipsum text into input fields in Firefox.",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "commands": {
    "toggle-lorem": {
      "suggested_key": {
        "default": "Alt+L"
      },
      "description": "Toggle Lorem Express modal"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "lorem-express@loremexpress.tech",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": "images/icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "content.css"
      ],
      "js": [
        "content.js"
      ],
      "all_frames": true,
      "match_about_blank": true
    }
  ]
}