# SaveImageAsSDWebUI

### Why this node exists

ComfyUI's built-in SaveImage dumps all files flat into the output directory — no global sequence numbers, so batch-generated files don't always sort in generation order. Stable Diffusion WebUI organizes images by date automatically, making browsing much easier.

Let's be honest: I'm just used to WebUI and don't want to leave my comfort zone.

This node brings WebUI's date-based directory structure and global sequence numbering to ComfyUI while preserving ComfyUI's workflow metadata embedding (PngInfo for PNG, EXIF for WebP), and adds a prefix parameter for custom subdirectories and filename prefixes.

### Usage

Replace the built-in SaveImage node — no extra wiring needed. The seed is automatically resolved from the first KSampler node in the workflow.

### Parameters

| Parameter | Description |
|---|---|
| `images` | Images to save |
| `filename_prefix` | Controls both subdirectory and filename prefix, see rules below |
| `image_format` | Save format: png / jpg / webp |
| `quality` | Compression quality for jpg and webp (0-100), ignored for png |

> **Seed**: Automatically read from the first KSampler node in the workflow and embedded in the filename (e.g. `00001-12345.webp`) for easy cross-reference with generation settings. Defaults to 0 if no KSampler is found.

### Prefix rules

A date folder `yyyy-mm-dd` is always the direct parent of the file. Prefix paths nest above the date folder.

| prefix | Output path |
|---|---|
| `txt2img/` | `output/txt2img/2026-05-25/00001-seed.webp` |
| `abc` | `output/2026-05-25/abc00001-seed.webp` |
| `imgEdit/qwen` | `output/imgEdit/2026-05-25/qwen00001-seed.webp` |
| `""` | `output/2026-05-25/00001-seed.webp` |
| `abc/def/` | `output/abc/def/2026-05-25/00001-seed.webp` |
| `abc/def/114514` | `output/abc/def/2026-05-25/11451400001-seed.webp` |

Rules:
- Ends with `/` → directory only, no filename prefix
- No `/` → filename prefix only, no subdirectory
- Contains `/` in the middle → everything before the last `/` is directory, after is filename prefix

### Metadata embedding

- **PNG**: prompt and workflow written via PngInfo
- **WebP**: prompt and workflow written via EXIF (Make/ImageDescription tags)
- **JPG**: no metadata support