Mathomatic

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Mathomatic",
  "description": "Mathomatic Offline.",
  "version": "16.0.5",
  "manifest_version": 2,
  "offline_enabled": true,
  "sandbox": {
    "pages": [
      "index.html",
      "test.html"
    ]
  },
  "app": {
    "scripts": [
      "mathomatic.js"
    ],
    "background": {
      "scripts": [
        "background.js"
      ]
    }
  },
  "icons": {
    "128": "mathomatic-128.png"
  }
}