Examine source code of InstaX Embed Fixer

{
  "manifest_version": 3,
  "name": "Discord Embed Fixer",
  "version": "1.4",
  "description": "Modifies copied Instagram and Twitter links to use embed-friendly domains (kkinstagram, fixupx).",
  "permissions": [
    "clipboardWrite"
  ],
  "host_permissions": [
    "*://*.instagram.com/*",
    "*://*.twitter.com/*",
    "*://*.x.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "discord-embed-fixer@mhhassaan.github.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.instagram.com/*",
        "*://*.twitter.com/*",
        "*://*.x.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "page_script.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}