Metadata Booster

Metadata Booster

Metadata Booster is a standalone ComfyUI frontend extension that adds quick metadata inspection tools for previewed media.

Features

• PNG Info right-click actions for node previews and Assets/media previews
• 
• metadata browser sidebar for dropped local files, folders, and live generated workflow previews
• grouped metadata dialog for Comfy prompt/workflow metadata
• Copy metadata to clipboard as formatted JSON
• Open workflow in ComfyUI for embedded workflow JSON

• optional lightweight Assets/media hover preview with configurable fields
• embedded video metadata support for MP4/MOV/M4V and WebM/MKV files when metadata is present in the container

Installation

1. Copy the comfyui-metadata-booster repository into your custom_nodes directory.
2. Restart ComfyUI.

Settings

• Metadata Booster: Enable metadata browser sidebar
• Metadata Booster: Auto-load generated media in metadata browser
• Metadata Booster: Enable Assets/media metadata preview
• Metadata Booster: Assets/media preview fields

Notes

• Image metadata uses the same frontend PNG/WebP/AVIF readers already shipped with ComfyUI.
• Video support is client-side only and reads embedded container metadata directly from the previewed file.
• The metadata browser accepts file and folder drops and can also track active node preview outputs in the current workflow.
• Unsupported formats and files without embedded metadata surface an explicit status message instead of failing silently.