◎ Radiance Note

A workflow you can't read is a workflow you can't debug, and the fastest way to make a graph unreadable is to leave no trace of why you built it the way you did. Radiance Note is a sticky-note node: a colored card that sits on the canvas, holds a title and body text, and does absolutely nothing to your data. There are no sockets, no outputs, no execution. It's pure documentation, which is precisely what makes it useful.

Every big ComfyUI graph needs these. The plumbing layer of a serious workflow is mostly invisible - half your nodes just bend wires and hold values - and if you come back to a 60-node project in three weeks, the person you're going to curse is past-you. A few notes saying "VAE ENCODE - keep denoise under 0.4 here" or "THIS branch is the experimental one" turn archaeology into a handoff.

How it works

There's not much to the mechanism, and that's the point. RadianceNote is registered as an output node that never actually outputs - the source comments call it "display-only," a node that "generates no outputs and never participates in the execution graph." The card you see in the graph is rendered by the pack's frontend JavaScript, and it does support Markdown in the body text, so you can do headers, lists, even code blocks inside a note. That's more than most note nodes bother with, and it's genuinely useful for a mini spec sheet on the canvas.

The inputs that matter

• text - the body. Multiline, default "📝 Note...", Markdown rendered in the frontend. This is the actual content.
• title - an optional bold line above the body. Use it as the section heading.
• color - nine card colors (Yellow, Orange, Red, Green, Cyan, Blue, Purple, Gray, White). Yellow is default and reads as a classic sticky; red/green are great for marking WIP vs. review.
• font_size - 10–24, default 14. Bump it for a note that has to be readable across a busy canvas.

That's it. One required field, three options, no wires anywhere.

Why bother when ComfyUI has groups?

Fair question. Groups already let you draw a box around a region and name it. Notes complement groups rather than replace them: a group names the region, a note explains what's inside and why. The pack's own use-cases list documentation, explaining parameter choices for collaborators, marking TODO/WIP/REVIEW, and annotating presets or experimental branches. If you share workflows - and this ecosystem's whole culture is "workflow included," per the image-metadata convention - a couple of notes are the difference between someone understanding your graph in a minute and pinging you on Discord.

Installing

Radiance Note ships in the Radiance pack:

cd ComfyUI/custom_nodes
git clone https://github.com/fxtdstudios/radiance.git
cd radiance
pip install -r requirements.txt   # or requirements_windows.txt / requirements_linux.txt / requirements_mac_silicon.txt

Or install via ComfyUI Manager by searching Radiance. Restart ComfyUI after. Honest take: Radiance is a heavyweight 32-bit color-science suite, and if you just want sticky notes there are lighter options. But you wouldn't be reading about this one if you weren't already in the pack - and for a color pipeline you'll iterate on for days, the Markdown support and color coding genuinely beat the bare-bones note nodes. One light aside: you'll know you've made it when your own graph has more notes than nodes, and it's still the more readable one for it.