Examine source code of Kazoom

{
  "manifest_version": 2,
  "name": "Kazoom",
  "description": "Automatically close your Zoom tabs after successfully triggering the app",
  "version": "0.0.5",
  "author": "António Ramadas",
  "homepage_url": "https://github.com/antonio-ramadas",
  "icons": {
    "48": "icons/kazoom@1x.png",
    "72": "icons/kazoom@1,5x.png",
    "96": "icons/kazoom@2x.png",
    "128": "icons/kazoom-128px.png",
    "144": "icons/kazoom@3x.png"
  },
  "background": {
    "scripts": [
      "background_script.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.zoom.us/*"
      ],
      "js": [
        "content_script.js"
      ],
      "css": [
        "content_script.css"
      ]
    }
  ],
  "permissions": [
    "tabs"
  ]
}