Examine source code of Real Price

{
  "name": "Real Price",
  "version": "1.0.1",
  "description": "Find the real price for Australian Real Estate!",
  "content_scripts": [
    {
      "matches": [
        "https://*.realestate.com.au/*"
      ],
      "css": [
        "main.css"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "permissions": [
    "*://lexa.realestate.com.au/*"
  ],
  "icons": {
    "16": "icon/icon16.png",
    "48": "icon/icon48.png",
    "128": "icon/icon128.png"
  },
  "manifest_version": 2
}