Sketchtab

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Sketchtab",
  "short_name": "Sketchtab",
  "description": "New tab page with code editor",
  "version": "0.7",
  "incognito": "split",
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "web_accessible_resources": [
    "index.html"
  ],
  "sandbox": {
    "pages": [
      "sandbox.html"
    ]
  },
  "manifest_version": 2,
  "content_security_policy": "script-src 'self'; object-src 'self'"
}