Examine source code of Orbit, the Cat

{
  "manifest_version": 2,
  "name": "Orbit, the Cat",
  "version": "1.2resigned1",
  "author": "Paras Chopra",
  "description": "Read the mind of Orbit, the developer's cat, on each new tab.",
  "homepage_url": "https://invertedpassion.com/free-resources/",
  "icons": {
    "128": "cat-walk-by-iconka.png"
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{84757bf3-f702-4966-99d6-d36e511b2065}"
    }
  }
}