Examine source code of isear

{
  "manifest_version": 3,
  "name": "isear",
  "description": "複数ワードに対応したページ内検索ツール",
  "version": "2.10",
  "browser_specific_settings": {
    "gecko": {
      "id": "{89f9c1e3-ca33-424e-81db-6dfcec3337b8}"
    }
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+F"
      },
      "description": "検索を開始する"
    },
    "switch_mode": {
      "suggested_key": {
        "default": "Alt+M"
      },
      "description": "コマンドモード切り替え"
    },
    "toggle_bars": {
      "suggested_key": {
        "default": "Alt+B"
      },
      "description": "ハイライトバーをON/OFF"
    },
    "retry": {
      "suggested_key": {
        "default": "Alt+R"
      },
      "description": "ハイライトを更新"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "option.html"
  },
  "action": {
    "default_icon": "data/icons/icon32.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "data/icons/icon32.png",
    "48": "data/icons/icon32.png",
    "128": "data/icons/icon32.png"
  },
  "permissions": [
    "tabs",
    "storage",
    "contextMenus",
    "scripting",
    "activeTab"
  ],
  "host_permissions": [
    "*://*/*",
    "<all_urls>"
  ],
  "homepage_url": "https://isear.intelfike.net/"
}