HTML
A content area to embed HTML and CSS markup.
Classic apps
You're viewing documentation for classic apps, which use Retool's original app editor. The new app builder is the recommended way to build apps and where Retool focuses new development.
HTML supports most HTML tags and presentational attributes. Scripting is not supported but event handlers are available.
To embed web pages, use an IFrame component. For functionality that isn't available in other components, or to use React or HTML and JavaScript, use a Custom Component.