Examine source code of Read in Romaji

{
  "manifest_version": 3,
  "name": "Read in Romaji",
  "version": "1.0.2",
  "description": "Convert Japanese text to romaji on any webpage. Read hiragana, katakana, and kanji with offline support.",
  "permissions": [
    "activeTab",
    "storage",
    "unlimitedStorage",
    "identity"
  ],
  "host_permissions": [
    "<all_urls>",
    "https://downloads.rirdownloads.com/*"
  ],
  "optional_permissions": [],
  "optional_host_permissions": [],
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "options_page": "licenses/licenses.html",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background/serviceWorker.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/contentScript.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "sidebar_action": {
    "default_title": "Read in Romaji Reader",
    "default_panel": "panel/sidebar-placeholder.html",
    "open_at_install": false,
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "vendor/sudachi/*",
        "vendor/sudachi/resources/*",
        "generated/glossary/glossary-manifest.json",
        "generated/glossary/index/*",
        "generated/glossary/lang/*/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "readinromaji@readinromaji.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personallyIdentifyingInfo"
        ]
      }
    }
  }
}