Examine source code of HTML Lite Capture

{
  "manifest_version": 2,
  "name": "HTML Lite Capture",
  "version": "1.0.0",
  "description": "Select blocks on page & copy simplified HTML",
  "icons": {
    "16": "icon.svg",
    "32": "icon.svg",
    "48": "icon.svg",
    "64": "icon.svg",
    "128": "icon.svg"
  },
  "permissions": [
    "activeTab",
    "clipboardWrite"
  ],
  "browser_action": {
    "default_icon": {
      "19": "icon.svg",
      "32": "icon.svg",
      "38": "icon.svg",
      "64": "icon.svg"
    },
    "default_title": "HTML Capture"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/index.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "html-lite-capture@vingt-douze.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}