Examine source code of EwoViewer Plus

{
  "manifest_version": 2,
  "name": "EwoViewer Plus",
  "version": "1.1.4",
  "default_locale": "en",
  "description": "A viewer for 3D models.",
  "homepage_url": "https://ewoviewer.com/",
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "64": "icon-64.png",
    "96": "icon-96.png",
    "128": "icon-128.png",
    "256": "icon-256.png",
    "512": "icon-512.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icon-16.png",
      "32": "icon-32.png",
      "48": "icon-48.png",
      "64": "icon-64.png",
      "96": "icon-96.png",
      "128": "icon-128.png",
      "256": "icon-256.png",
      "512": "icon-512.png"
    }
  },
  "background": {
    "scripts": [
      "/js/bg-worker.js"
    ],
    "persistent": false
  },
  "offline_enabled": true,
  "content_security_policy": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'; img-src * 'self' data:",
  "browser_specific_settings": {
    "gecko": {
      "id": "{cd3ad5f1-2d01-4a00-be86-31ccd8bfd4d9}"
    }
  }
}