Examine source code of Post and Search

{
  "manifest_version": 2,
  "name": "Post and Search",
  "version": "1.3.0",
  "description": "Post and Search is a modern extension designed to bring modern architecture to your every day browsing experience.",
  "icons": {
    "16": "public/app_icon/icon_16.png",
    "32": "public/app_icon/icon_32.png",
    "48": "public/app_icon/icon_48.png",
    "64": "public/app_icon/icon_64.png",
    "96": "public/app_icon/icon_96.png",
    "128": "public/app_icon/icon_128.png",
    "256": "public/app_icon/icon_256.png",
    "512": "public/app_icon/icon_512.png"
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "public/app_icon/icon_16.png",
      "32": "public/app_icon/icon_32.png",
      "48": "public/app_icon/icon_48.png",
      "64": "public/app_icon/icon_64.png",
      "96": "public/app_icon/icon_96.png",
      "128": "public/app_icon/icon_128.png",
      "256": "public/app_icon/icon_256.png",
      "512": "public/app_icon/icon_512.png"
    }
  },
  "content_security_policy": "default-src 'self'; img-src https:; connect-src https://api.openweathermap.org; font-src https://fonts.gstatic.com; style-src 'self' https://fonts.googleapis.com",
  "permissions": [
    "storage",
    "geolocation",
    "topSites",
    "https://api.openweathermap.org/data/2.5/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d85e1f54-96a8-4c1b-8cad-63a1f2c5339d}"
    }
  }
}