Examine source code of Japanese Lookup

{
  "manifest_version": 3,
  "name": "Japanese Lookup",
  "version": "1.0.0",
  "description": "Select Japanese text, right-click, and read meanings, on/kun readings, and stroke order without leaving the page.",
  "browser_specific_settings": {
    "gecko": {
      "id": "jp-lookup@local",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "searchTerms"
        ]
      }
    }
  },
  "permissions": [
    "contextMenus"
  ],
  "host_permissions": [
    "https://jisho.org/*",
    "https://kanjiapi.dev/*",
    "https://cdn.jsdelivr.net/*",
    "https://raw.githubusercontent.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ]
}