Examine source code of Display beautiful stuff

{
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "{2affdc27-b353-4289-8635-c364826de77a}",
      "strict_min_version": "54.0"
    }
  },
  "name": "Display beautiful stuff",
  "description": "This extension tries to display a beautiful image from Reddit subreddits",
  "version": "2.3.4resigned1",
  "chrome_url_overrides": {
    "newtab": "display_layout.html"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "browser_action": {
    "default_icon": "earth.png",
    "default_popup": "popup.html"
  }
}