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Node ReferenceHTML Viewer Node
Node Reference

HTML Viewer Node

Render sandboxed HTML output directly on the canvas.

The HTML Viewer node is a planned utility node for rendering HTML output or packaged UI content directly on the canvas. It is designed to display an upstream node's HTML inside the graph instead of requiring an external preview.

Not yet available
The HTML Viewer node is part of the planned utility-node set. It appears in the node reference catalog with its intended purpose, but it is not wired into Builder Studio execution yet. There is no HTML Viewer node type, canvas node, executor, or schema definition in the current product, so it cannot be added to a canvas or run today. This page documents the intended behavior so the contract is clear before the node ships.

Intended purpose

HTML Viewer is meant to render sandboxed HTML output directly on the canvas, displaying HTML or packaged UI content inside the graph. It would take HTML produced upstream and show the rendered result as a node, so you can preview generated markup without leaving Builder Studio. It belongs to the utility and integration group, alongside Browse Web and Webhook Call.

How display nodes work today

Builder Studio already renders media that passes through the graph — Image, Video, and Audio nodes display their content on the canvas as the workflow produces it. An HTML Viewer would add a display surface for HTML, sandboxing the markup so it renders safely as a node rather than running unconstrained in the app.

What to use instead for now
Until the HTML Viewer node ships, there is no canvas node for rendering arbitrary HTML output. For media results, the Image, Video, and Audio nodes already display their content directly on the canvas.

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