Examine source code of YouTube Clarity

{
  "manifest_version": 2,
  "name": "YouTube Clarity",
  "version": "1.0",
  "description": "Prevent distraction from flashy thumbnails and other clickbait tactics on YouTube.",
  "browser_action": {
    "default_title": "YouTube Clarity",
    "default_popup": "popup/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "run_at": "document_end",
      "js": [
        "main.js"
      ],
      "css": [
        "lowercase.css"
      ]
    }
  ],
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "permissions": [
    "storage"
  ]
}