Examine source code of Brain Teaser Trivia

{
  "manifest_version": 2,
  "name": "Brain Teaser Trivia",
  "version": "1.0",
  "description": "Test your knowledge with fun daily trivia on geography, history, and science!",
  "icons": {
    "48": "trivia_icon.png"
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Brain Teaser Trivia"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{09b1ef34-90ed-4c28-931d-79fbf59eb94f}"
    }
  }
}