---
title: "Embedded Workflow JSON in PNG — ComfyUI Glossary & Node Definition"
description: "ComfyUI saves the entire node graph inside the tEXt chunk of every generated PNG image. Learn how Embedded Workflow JSON in PNG works inside ComfyUI node workflows on Windows."
canonical: https://comfy.ink/words/workflow-json-metadata
updated: 2026-10-17
---

# Embedded Workflow JSON in PNG

ComfyUI saves the entire node graph inside the tEXt chunk of every generated PNG image.

## Facts (2026-10-17)

- **Term:** Embedded Workflow JSON in PNG
- **In Short:** ComfyUI saves the entire node graph inside the tEXt chunk of every generated PNG image.
- **Applies To:** ComfyUI SD 1.5, SDXL, Flux & Video

## Definition: Embedded Workflow JSON in PNG

ComfyUI saves the entire node graph inside the tEXt chunk of every generated PNG image.

Dragging any unstripped ComfyUI PNG from Windows Explorer onto the ComfyUI canvas immediately reconstructs the exact nodes, seeds, and prompts used to make it.

## How to tune this in your ComfyUI workflow

Every parameter in ComfyUI is exposed directly on its node rather than hidden behind global settings tabs. You can inspect or override this behavior per pass in [ComfyUI Studio](https://comfy.ink/studio).

New to node graphs? Grab the Windows installer at [/download](https://comfy.ink/download) and open a built-in template from the workflow menu.

## FAQ

### What does Embedded Workflow JSON in PNG do in ComfyUI?

ComfyUI saves the entire node graph inside the tEXt chunk of every generated PNG image. Dragging any unstripped ComfyUI PNG from Windows Explorer onto the ComfyUI canvas immediately reconstructs the exact nodes, seeds, and prompts used to make it.

### Where do I adjust this setting on the canvas?

Check the corresponding loader or [KSampler](https://comfy.ink/nodes/ksampler) widget in your active workflow graph.

## Related

- [ComfyUI Glossary](https://comfy.ink/words)
- [KSampler & KSampler (Advanced)](https://comfy.ink/nodes/ksampler)
- [ComfyUI Studio Workspace](https://comfy.ink/studio)
- [ComfyUI VRAM Requirements for SDXL, Flux & Video (6GB–24GB)](https://comfy.ink/guides/comfyui-vram-requirements-guide)
- [Latent Space & LATENT Pin](https://comfy.ink/words/latent-space)

## Download

Free desktop app: [Download Comfy](https://comfy.ink/download)

Markdown mirror: https://comfy.ink/words/workflow-json-metadata.md