Examine source code of JP Reader

{
  "action": {
    "default_icon": {
      "16": "assets/icon16.webp",
      "19": "assets/icon19.webp",
      "32": "assets/icon32.webp",
      "38": "assets/icon38.webp",
      "48": "assets/icon48.webp",
      "64": "assets/icon64.webp",
      "128": "assets/icon128.webp"
    },
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "jp-reader@soundofthesky"
    }
  },
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval';"
  },
  "description": "Annotate Japanese words with useful information.",
  "host_permissions": [
    "<all_urls>"
  ],
  "icons": {
    "16": "assets/icon16.webp",
    "19": "assets/icon19.webp",
    "32": "assets/icon32.webp",
    "38": "assets/icon38.webp",
    "48": "assets/icon48.webp",
    "64": "assets/icon64.webp",
    "128": "assets/icon128.webp"
  },
  "manifest_version": 3,
  "name": "JP Reader",
  "permissions": [
    "storage",
    "activeTab"
  ],
  "version": "1.1.2"
}