Examine source code of Random blurry photo

{
  "manifest_version": 2,
  "name": "Random blurry photo",
  "description": "Opens a random blurry image and the user can view it.",
  "version": "1.0",
  "icons": {
    "32": "icons/logo_32.png",
    "64": "icons/logo_64.png"
  },
  "chrome_url_overrides": {
    "newtab": "tabs.html"
  },
  "applications": {
    "gecko": {
      "strict_min_version": "59.0a2",
      "id": "{e4976039-8785-46f6-ac7e-e2be953fe695}"
    }
  }
}