Examine source code of MyExportToMD

{
  "manifest_version": 3,
  "name": "MyExportToMD",
  "version": "1.0.13",
  "description": "Firefox extension to export full page or selected elements to Markdown file",
  "author": "Volodymyr Oliinyk",
  "homepage_url": "https://github.com/volodymyroliinyk/my-export-to-md",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "firefox-extension-my-export-to-md@volodymyroliinyk.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "downloads",
    "scripting",
    "storage"
  ],
  "background": {
    "scripts": [
      "dist/background.js"
    ]
  },
  "action": {
    "default_title": "MyExportToMD",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png",
      "128": "icons/icon-128.png"
    }
  }
}