Branded Comfy Thumbnail is a frame-selection and composition workflow that turns moments from your video into on-brand YouTube thumbnails. It centers on a simple pipeline: LoadVideo ingests your source clip, GetVideoComponents exposes frame data, and ImageFromBatch lets you pick exact frames by index. Those selected frames are grouped with BatchImagesNode and then composited in a grid by a custom Merge Images node (shown in the graph with the ID 2f633b06-929a-4f4c-afff-ffea89d93a76). Brand references such as a logo, color swatches, or a background plate are brought in with LoadImage. You can review choices at each step with PreviewImage and export the final design with SaveImage.
What makes this workflow practical is its focus on speed and control for real-world thumbnail creation—no diffusion model required. The YouTube Thumbnail Generator group provides a clean 2-up or 4-up layout toggle (per the author note: switch off for 2 images, on for 4 images), so you can quickly compare options or output a final composite. A GeminiNanoBanana2 utility node is included to assist with on-brand text ideas or file naming guidance; it does not render text onto the image in this version. MarkdownNote blocks are sprinkled in to document settings and remind you of best practices while you work.
API
Use this workflow from code
Every Comfy workflow is a JSON graph. The payload below is this workflow, exactly as ComfyUI runs it — fetch it from the URL, keep it in version control, or load it in ComfyUI and run it node by node.
Run it from TypeScript or Python with the Comfy SDK. The same code targets Comfy Cloud or a ComfyUI you host yourself — only the base URL changes.
// Install (beta)
npm i @comfyorg/sdk
// Run this workflow (TypeScript)
import { Comfy } from "@comfyorg/sdk";
const client = new Comfy({ apiKey: "comfyui-..." });
const wf = await client.workflows.fromFile("workflow_api.json");
const job = await client.run(wf);
await job.getOutputs("<output-node-id>")[0].toFile("output.png");The SDK takes a workflow in API format: open this workflow in ComfyUI and use File → Export Workflow (API).
Comfy Cloud API access requires a plan with an API key.
FAQ
