Examine source code of TwitFix Extension

{
  "name": "TwitFix Extension",
  "description": "Add's Twitfix related copy options to Twitter's video context menu",
  "version": "1.3",
  "manifest_version": 2,
  "permissions": [
    "clipboardWrite",
    "activeTab"
  ],
  "homepage_url": "https://github.com/robinuniverse/TwitFix-Extension",
  "developer": {
    "url": "https://github.com/robinuniverse/TwitFix-Extension"
  },
  "content_scripts": [
    {
      "matches": [
        "*://twitter.com/*"
      ],
      "js": [
        "main_min.js"
      ]
    }
  ]
}