Examine source code of Kleinanzeigen Plus

{
  "name": "Kleinanzeigen Plus",
  "version": "1.1",
  "description": "Erweitert Ebay-KleinAnzeigen um zusätzliche Funktionen",
  "permissions": [
    "*://*.ebay-kleinanzeigen.de/*",
    "activeTab",
    "storage",
    "tabs"
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": {
      "16": "img/logo16.png",
      "32": "img/logo32.png",
      "48": "img/logo48.png",
      "128": "img/logo128.png"
    },
    "default_popup": "html/popup.html",
    "default_title": "Kleinanzeigen Plus"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.ebay-kleinanzeigen.de/*"
      ],
      "css": [
        "css/style.css"
      ],
      "js": [
        "js/contentscript.js"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "16": "img/logo16.png",
    "32": "img/logo32.png",
    "48": "img/logo48.png",
    "128": "img/logo128.png"
  },
  "web_accessible_resources": [
    "img/hide.png"
  ],
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "kleinanzeigenplus@evgenij_hajrow"
    }
  },
  "minimum_chrome_version": "49.0"
}