I'm a ComfyUI user, and often only five or six out of a hundred generated images meet my requirements. If the images are upscaled before I select them, it's a waste of resources and time. Therefore, I always use external tools to upscale the images after I've selected them, but this corrupts the metadata.

After trying various tools and nodes, I decided to create my own tool with a very simple function: copy and paste metadata.

How to use:

1. Specify an Original folder with PNG image files containing metadata. These are usually the unupscaled image from "Save Image with Metadata".

2. Specify an Upscaled folder with images that have been upscaled using external tools (such as Final2x).

3. Specify an Output directory.

Since images upscaled by external tools are usually named with some text added before the filename, the program will automatically find the file with the "most similar name" in the Original folder, copy and paste the metadata, then place the final file in the Output directory.

Program defaults:

1. If the Upscaled image is in PNG format, the entire full metadata will be copied unconditionally.

2. If the Upscaled image is in WEBP/JPG format, the program will attempt to copy the full metadata, but if the metadata is too large(over 60KB), it will instead copy the lite version(A1111 format string) of the metadata with auto mode. In Civital, the lite version of the metadata can still be correctly recognized, but it does not contain complete workflow data.