💾 Save Image With Metadata

Stock SaveImage embeds ComfyUI's own workflow JSON into the file - great for reopening the exact graph later, less useful if you want a normal, human-readable "Steps: 20, Sampler: dpmpp_2m, Model: whatever.safetensors" block, the kind of metadata Civitai and most A1111-adjacent tools expect. This node writes that instead, auto-detected straight from your workflow, so you don't have to build it by hand. The pack credits it as adapted from ChronoKnight's Chrono-Save-for-Civitai node.

How it works

Only images actually needs connecting - the node walks the rest of your graph to auto-detect the checkpoint, sampler, seed, prompts, and LoRAs, and writes them out in Civitai-compatible form alongside the pixels. filename_prefix and folder both accept a shared token language - date tokens (%Y, %m, %d, and the bundled %date:yyyy-MM-dd - hh.mm.ss% style), plus %seed and %model for the resolved generation seed and model basename - so your output organizes itself automatically instead of everything landing in one flat folder.

The inputs and outputs that matter

• images - the only required connection.
• filename_prefix (default %date:yyyy-MM-dd - hh.mm.ss%) and folder (default %date:yyyy-MM-dd%) - token-templated naming and subfolder placement.
• file_format - png, jpeg, or webp.
• quality - compression quality, 1–100.
• embed_workflow (default true) - also keep the standard ComfyUI workflow JSON embedded alongside the Civitai-style metadata, so you get both.
• strip_lora_prompt (default false) - drop LoRA tags out of the written prompt text.
• positive_override (optional) - replace the auto-detected positive prompt with your own; accepts a single string applied to the whole batch, or a list of prompts matched one per image.

No node outputs - like stock SaveImage, this is a terminal node.

How to install it

Via ComfyUI Manager: search ComfyUI-mnemic-nodes, install, restart. Manually:

cd ComfyUI/custom_nodes
git clone https://github.com/MNeMoNiCuZ/ComfyUI-mnemic-nodes

Restart ComfyUI. No model downloads or extra dependencies.

Common issues & troubleshooting

A detected field looks wrong or blank. Auto-detection reads your graph's structure to figure out the checkpoint/sampler/prompt, so a heavily rerouted or unusual workflow can occasionally trip it up. positive_override exists specifically for this - rather than fighting the auto-detect logic, override the field by hand when it guesses wrong.

Testing jpeg/webp with metadata embedding. PNG has the most straightforward, well-supported path for embedded text metadata; not every image format handles it identically. If you're switching file_format away from the default, it's worth opening a saved file once in a metadata viewer to confirm the fields came through the way you expect.

Why reach for this over the stock Save Image node? Specifically when you're planning to share or archive generations somewhere that reads Civitai-style resource metadata rather than ComfyUI's own graph format - you get both if you want them, since embed_workflow stays on by default alongside the new metadata this node adds.