A ComfyUI PNG can carry enough JSON to reconstruct the graph, including prompts, nodes, links, model names, seeds, and custom-node inputs. Inspect those PNG text chunks, remove the supported workflow data, and verify the cleaned copy entirely in your browser.
The browser removes supported PNG tEXt, zTXt, and iTXt entries such as prompt, workflow, parameters, and extra_pnginfo while copying the PNG image data without decoding or recompressing it.
This page only handles file-level data the browser can safely inspect and remove, so ordinary metadata cleanup never triggers an upload or charge.
Remove supported prompt graphs, workflow nodes and links, model names, seeds, sampler values, and custom metadata stored in PNG text chunks.
The cleaner rebuilds the PNG container and preserves its IDAT image stream, dimensions, transparency, and color information.
ComfyUI workflow removal needs no GPU or server. The selected image and workflow JSON stay in the current browser tab.
This removes supported metadata embedded in the selected file. A copied workflow, sidecar JSON, gallery record, filename, visible prompt text, or proprietary custom-node payload stored elsewhere is outside the file cleanup.
File formats are messy. These answers describe the supported behavior of this version—not a promise that every trace everywhere has disappeared.
Supported PNG text entries include prompt, workflow, parameters, and related extra PNG information. Their JSON may contain nodes, links, prompts, models, seeds, and generation settings.
The image can still be viewed, but ComfyUI should no longer be able to restore the graph from the supported workflow fields removed from that copy.
No. Workflow data is file metadata, so inspection, removal, and verification happen locally and remain free.
