Examine source code of prayertimesriyadh

{
  "manifest_version": 2,
  "name": "prayertimesriyadh",
  "version": "1.0",
  "description": "Check Prayer Times Riyadh Daily",
  "icons": {
    "48": "icons/48.png"
  },
  "applications": {
    "gecko": {
      "strict_min_version": "58.0",
      "id": "prayertimesriyadh-firefox@robwu.nl"
    }
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "prayertimesriyadh"
  }
}