manifest.json

{
  "manifest_version": 2,
  "name": "NCC Image Checker",
  "short_name": "Image Checker",
  "description": "Provides image optimisation information within the browser.",
  "version": "1.5.0",
  "icons" : {
    "16": "app/assets/icon.png",
    "48": "app/assets/icon.png",
    "128": "app/assets/icon.png"
  },
  "browser_action": {
    "default_icon": "app/assets/icon.png",
    "default_title": "NCC Image Checker",
    "default_popup": "app/popup.html"
  },
  "options_ui": {
    "page": "app/options.html",
    "chrome_style": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "app/styles/content.css"
      ],
      "js": [
        "app/content.js",
        "app/public.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "content_security_policy": "script-src 'self' https://www.google-analytics.com; object-src 'self'",
  "permissions": ["activeTab", "tabs"],
  "minimum_chrome_version": "54.0.2840"
}