连环画HTML内嵌预览

The comic-book workflow's feedback loop lives in this node. 连环画HTML内嵌预览 ("HTML embedded preview") renders the interactive HTML comic - the one produced by ComicHTMLViewerNode - right inside the ComfyUI interface, in an iframe on the node itself. You don't have to Alt-Tab to a browser to see whether the rabbit's eyes match page three. It's the node you keep in the graph during a whole iteration session and drop when you're done.

How it works

Give it the path to the HTML file and it reads the file from disk and returns the content to its front-end JavaScript (web/comic_html_preview.js), which drops it into an iframe sized to your width / height / scale settings. The whole interactive viewer comes along for free - page buttons, keyboard arrows, transitions - because it's just rendering the same HTML the browser node opens. There's a refresh mechanism so re-running the upstream viewer node updates the preview in place.

It's a pure local utility: no API, no key, no network. That also makes it a useful diagnostic - if you can preview an HTML file here, the problem is upstream (generation), not the pack's plumbing.

Inputs and output

• viewer_path (required) - the absolute path string from ComicHTMLViewerNode.viewer_path. Also handles a file path typed in manually.
• width / height - preview window size in pixels (100–2000, defaults 800×600). Good for squeezing it onto a small screen or blowing it up when you're reading dialogue.
• scale - 0.1–2.0 zoom, default 1.0.

It has a single output, html_content, which is just the HTML string it read - a pass-through you can route to other string tools if you ever want the markup itself. The node is marked as an output node, so it renders its preview automatically when the workflow runs.

Install & setup

Same pack, same install:

cd ComfyUI/custom_nodes
git clone https://github.com/xuchenxu168/ComfyUI_doubao_seed
cd ComfyUI_doubao_seed
pip install -r requirements.txt

Restart ComfyUI and it shows up under Ken-Chen/Doubao.

Gotchas

The README's most-emphasized troubleshooting entry is exactly this node showing a blank window. The three usual causes, in order: the WEB_DIRECTORY = "./web" entry didn't load (restart ComfyUI, check the startup log for "[Doubao-Seed] Plugin loading completed!"), a stale browser cache (hard refresh), or viewer_path pointing at a file that doesn't exist (the node will render an error panel instead of a comic - that's its honest face when the path is wrong). If you see the error panel, the path is the problem, not the node.