Examine source code of Beaver Full Screenshot

{
  "manifest_version": 3,
  "name": "Beaver Full Screenshot",
  "short_name": "Full Screenshot",
  "version": "0.1.4",
  "description": "Save the complete current webpage as one PNG. Local only: no content scanning, analytics, uploads, or data collection.",
  "author": "Beaver Tools",
  "homepage_url": "https://beavertools.app/",
  "permissions": [
    "activeTab",
    "scripting",
    "downloads"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Capture full page",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png",
    "256": "icons/icon-256.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "beaver-full-screenshot@beavertools.app",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "developer": {
    "name": "Beaver Tools",
    "url": "https://beavertools.app/"
  }
}