Examine source code of Markdown to WordPress

{
  "manifest_version": 2,
  "name": "Markdown to WordPress HTML Converter",
  "description": "Markdown形式のテキストを、WordPressのクラシックエディタ（コードタブ）にそのまま貼れる形式のHTMLへ高速変換します。",
  "version": "1.0.0",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "markdown2wordpress-converter@shinsanworks.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Default Popup Title",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.google.com/*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}