Examine source code of Discord Embeds

{
  "name": "Discord Embeds",
  "version": "1.1.0",
  "description": "Preview sites' Discord embeds for debugging purposes. Not affiliated in any way with Discord.",
  "permissions": [
    "activeTab"
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*",
        "file:///*.html"
      ],
      "js": [
        "meta-reader.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "discord-embed-previewer@roingus.dev"
    }
  },
  "manifest_version": 3
}