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Save Image Extended for ComfyUI

Save Image Extended for ComfyUI is a self-hosted Python custom node that saves ComfyUI-generated images in configurable formats and organizes them using customizable folders, filenames, and workflow values. It can also export generation details such as prompts, sampler settings, and loaded models to JSON or save metadata in image files.

Independent OpenViST project profile, based on linked sources.

Save Image Extended for ComfyUI — OpenViST project profile in AI Developer Tools & SDKs.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when a ComfyUI workflow needs more control over how generated images are named, formatted, grouped, or accompanied by generation records.

Who it is for

  • ComfyUI users who want generated images grouped into custom folders and subfolders.
  • Workflow builders who want output filenames to include sampler, model, prompt, or other node-widget values.
  • Users who want JSON records of generation settings saved alongside image outputs.

Documented uses

  • Save generated images in a selected format, including PNG, WebP, AVIF, JPEG, JXL, TIFF, GIF, BMP, or JPEG 2000.
  • Build filename and folder patterns from prefixes, workflow values, delimiters, counters, and date or time formats.
  • Save job details such as prompts, sampler settings, and loaded models to folder-level or per-image JSON files.
  • Store metadata in image files where the chosen format and library support it.
Before you choose

Requirements & limits

The project is a self-hosted ComfyUI extension distributed through a public GitHub repository under the GPL-3.0 license.

  • Filename and folder patterns can reference node widget values using the documented node-ID and widget-name notation.
  • The extension supports many output formats, but ComfyUI prompt loading is documented for PNG and WebP only.
  • The README flags limitations involving lossless WebP loading, JPEG 2000 EXIF data, large WebP and JXL images, and oversized JPEG metadata.
  • The documented install uses ComfyUI's custom_nodes directory and lists Python image-processing dependencies.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Install the custom node in ComfyUI

Place the repository in ComfyUI's custom_nodes directory and install the listed Python image dependencies.

Before you start

  • An existing ComfyUI installation with access to its custom_nodes directory.
  • Python and the listed packages: NumPy, Pillow, pillow-avif-plugin, and pillow-jxl-plugin.

Steps

  1. Open a terminal inside the custom_nodes folder in the ComfyUI installation.

  2. Clone the repository with the command below.

    Documented command
    git clone https://github.com/audioscavenger/save-image-extended-comfyui
  3. Install the listed packages with the command below.

    Documented command
    pip install numpy pillow pillow-avif-plugin pillow-jxl-plugin

Expected outcome

The repository is placed in ComfyUI's custom_nodes directory and the README-listed Python packages are installed.

Guide limitations

  • The README lists Python 3.10.6, PyTorch 2.5.1+cu124, and a ComfyUI 0.3.12 build as a tested configuration, not a compatibility guarantee.
  • Installation steps do not document running a workflow or validating the node.
Evidence and transparency

Sources & review

Source record details
Source availability
Active
Sources checked
17 October 2026
Original website title
audioscavenger/save-image-extended-comfyui · Official homepage title · retained in its source language