Examine source code of Kuraji - 「クラジ」

{
  "manifest_version": 3,
  "name": "Kuraji - 「クラジ」",
  "version": "0.4.0",
  "author": "colechiodo.cc",
  "description": "Automatically searches for and loads Japanese subtitles for your videos.",
  "browser_specific_settings": {
    "gecko": {
      "id": "colechiodo@gmail.com",
      "strict_min_version": "112.0"
    }
  },
  "icons": {
    "16": "assets/icons/icon16.png",
    "48": "assets/icons/icon48.png",
    "128": "assets/icons/icon128.png"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/content.js"
      ],
      "all_frames": true,
      "match_about_blank": true
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "assets/icons/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "action": {
    "default_popup": "src/popup/popup.html"
  },
  "options_ui": {
    "page": "src/settings/settings.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "background/background.js"
    ],
    "type": "module"
  }
}