Examine source code of Distraction Free Reddit

{
  "manifest_version": 2,
  "name": "Distraction Free Reddit",
  "version": "1.3.0",
  "description": "Remove the distracting parts of reddit and focus only on what really matters to you.",
  "permissions": [
    "activeTab",
    "storage",
    "tabs"
  ],
  "background": {
    "scripts": [
      "./static/js/background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": {
      "192": "logo192.png"
    },
    "default_title": "Popup",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "js": [
        "./static/js/content.js"
      ],
      "matches": [
        "*://*.reddit.com/*"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "192": "logo192.png"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e14163a1-321a-4c12-a85d-1f25d68fe047}",
      "strict_min_version": "58.0"
    }
  }
}