Examine source code of Smart Image Alt Generator

{
  "manifest_version": 2,
  "name": "Smart Image Alt Generator (Offline)",
  "version": "1.0",
  "description": "Generate simple alt text for images without using external servers.",
  "permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "style.css"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8ee4bb06-5792-4ff0-9ed6-680957f2579b}"
    }
  }
}