Examine source code of Table Selector Pro

{
  "manifest_version": 3,
  "name": "Table Selector Pro",
  "version": "3.1.0",
  "description": "Select and copy rows, columns, or cells from any HTML table. Export as CSV, Excel, JSON, Markdown, or Google Sheets format.",
  "permissions": [
    "contextMenus",
    "clipboardWrite",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "styles.css"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "Table Selector Pro",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "commands": {
    "copy-selection": {
      "suggested_key": {
        "default": "Ctrl+Shift+C",
        "mac": "Command+Shift+C"
      },
      "description": "Copy selected table cells (uses last-used format)"
    }
  },
  "minimum_chrome_version": "109",
  "browser_specific_settings": {
    "gecko": {
      "id": "table-selector-pro@extension",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}