manifest.json file for chrome extensions

manifest.json

{
  "manifest_version": 2,

  "name": "extension name",
  "description": "extension description",
  "version": "2.0",

  "content_scripts": [
    {
      "matches": ["<all_urls>"],
      "js": ["app.js"],
      "css": ["./stamp-duty.css"]
    }
  ],

  "browser_action": {
    "default_icon": "./images/percentage.png",
    "default_popup": "popup.html"
  },
  "permissions": ["https://rightmove.co.uk/*"],
  "web_accessible_resources": ["images/*.svg", "stamp-duty.css"]
}