ComfyUI-LoRA-Backup

ComfyUI-LoRA-Backup

Copy the LoRAs that are actually active in your current workflow to any folder — with one click.

Why this node exists

Sometimes a combination of LoRAs just works exceptionally well together. When that happens, you often want to use exactly these LoRAs in another ComfyUI installation — on a second machine, a portable setup, or a fresh install. Manually hunting down which LoRA files were active in the workflow, finding them in your (usually huge) models/loras folder and copying them over is tedious and error-prone.

This node solves that: press one button and all LoRAs that are currently active in your workflow are copied to a target folder of your choice (e.g. on another drive or a network share). From there you can move them to any other ComfyUI installation.

Features

• One-click copy — a "📂 Copy now" button directly on the node, no need to run the workflow
• Only active LoRAs — disabled rows in rgthree's Power Lora Loader (on: false) are skipped, as are muted/bypassed nodes
• Works with all common loaders — LoraLoader, LoraLoaderModelOnly, Power Lora Loader, LoRA stackers, etc. The node scans the workflow for LoRA file names, not for specific node types
• Keeps your folder structure — subfolders from your loras directory are recreated in the target folder (optional)
• Skips existing files — already copied LoRAs (same size) are not copied again (optional)
• Optional auto mode — if you want, the node can also copy automatically on every queue

Installation

1. Open a terminal in ComfyUI/custom_nodes/

2. Clone this repository:

   git clone https://github.com/Slartibart23/ComfyUI-LoRA-Backup.git
   

   Or download the repository as a ZIP and extract it into custom_nodes/ so that the structure looks like this:

   ComfyUI/custom_nodes/ComfyUI-LoRA-Backup/
       __init__.py
       web/
           lora_backup.js
   

3. Restart ComfyUI and reload the browser page (F5) so the button script is loaded.

Usage

1. Add the node: right-click → Add Node → utils → "LoRA Backup (copy used LoRAs)"
2. Set target_folder to your destination, e.g. E:/LoRA_Favorites (use forward slashes or double backslashes on Windows)
3. Generate as usual. When a LoRA combination turns out great, click 📂 Copy now — done.

The result is shown as a toast notification (e.g. "2 copied, 1 already present") and logged in the ComfyUI console.

Node options

| Option | Default | Description | |---|---|---| | target_folder | D:/LoRA_Favorites | Destination folder. Created automatically if it does not exist. | | keep_subfolders | on | Recreate the subfolder structure of your loras directory in the target folder. | | skip_existing | on | Skip files that already exist in the target folder with the same size. | | auto_run | off | If enabled, the node additionally copies on every queue run. Off = button only. | | trigger (input) | – | Optional. Connect any output (e.g. the decoded image) to make the node run after generation in auto mode. Not needed for the button. |

How it works

The button reads the current workflow directly from the browser, converts it to the API prompt format and sends it to a small server endpoint (/lora_backup/copy). The endpoint scans all node inputs for LoRA file names that exist in your loras folder, filters out disabled entries (on/enabled/switch fields), and copies the remaining files with shutil.copy2 (timestamps preserved). Nothing is ever deleted or moved — files are only copied.

Compatibility

• ComfyUI on Windows, Linux and macOS (developed and tested on Windows 11)
• Tested with the standard LoraLoader and rgthree's Power Lora Loader
• Recognized LoRA file extensions: .safetensors, .ckpt, .pt, .pth, .bin

License

MIT — see LICENSE.