Examine source code of Muslim Tab

{
  "manifest_version": 2,
  "name": "Muslim Tab",
  "short_name": "MT",
  "description": "Your daily Islamic reminder assistant, and remind for indeed, the reminder benefits the believers.",
  "author": "Muslim Tab",
  "version": "5.2",
  "content_security_policy": "script-src 'self' 'sha256-c2PmglUvg1TK6aIrnIkg2rl4L934scU6b3VcUXocAYU='; object-src 'self'",
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "icons": {
    "16": "icons/muslim-tab-16.png",
    "32": "icons/muslim-tab-32.png",
    "48": "icons/muslim-tab-48.png",
    "128": "icons/muslim-tab-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c8f5265e-32e7-4c01-8db7-0674a21af82e}"
    }
  }
}