渲染网页

Yes, there's a node that just embeds a webpage in your ComfyUI canvas. 渲染网页 (class FCV_ShowWebpage) takes a URL and displays the page live in an iframe right on the node - dashboards, documentation, reference images, a browser you never have to alt-tab to. It's an output-only display node: one STRING in, nothing out, and it re-renders on each execution.

FlowCV is ostensibly an OpenCV pack, but this is the clearest sign the author just built whatever was handy - and honestly it's a fun one. If you keep a dashboard or a doc page open while iterating on a workflow, this saves you the tab juggling.

How it works

The Python side strips whitespace from the URL, and if you forget the protocol it helpfully prepends http:// (so example.com becomes http://example.com). The JavaScript side creates an iframe inside the node and, on each execution, points it at the URL. The iframe is sandboxed (allow-scripts allow-same-origin allow-forms allow-popups), which keeps it from trashing your ComfyUI page while still letting most pages work.

Using it

One input, 网址 (URL), default https://www.example.com. Change it, run, and the embedded page updates. Note it's is_output_node, so it sits at the end of a wire and has no output ports. You can wire the URL in from any node that produces a string - a FCV_MarkdownEditor, a config, a generator - rather than typing it by hand.

Installing

Bundled in FlowCV. ComfyUI Manager, search "FlowCV"; or:

cd ComfyUI/custom_nodes
git clone https://github.com/Koren-cy/FlowCV

Restart ComfyUI. Dependencies are the pack's light set (opencv-python, numpy, pyserial); the embed is pure frontend JS. README note: the project migrated to ComfyUI_For_Academic, so this repo is archived but working.

Gotchas

The big one: a lot of sites refuse to be framed. Sites that send X-Frame-Options: DENY or a frame-ancestors CSP (Google, most news sites, most login pages) will show up as a blank or error page, and no node setting will fix that - it's the site's decision. Prefer sites that allow embedding or set your own. The sandbox also means the embedded page runs with restricted privileges, which is security-in-your-favor but can break heavy web apps. And as with all the display nodes, it only updates when the workflow executes.