NFT Metadata Updater

How to Use This Tool

This tool allows you to upload a folder containing JSON metadata files and/or a master JSON file (array of metadata objects) for NFTs, edit them individually or in batch, and download all updated files as a single ZIP containing both individual JSONs and a deduplicated master JSON with all editions.

Note: Changes are applied to all loaded metadata files, including the master JSON. Duplicates are removed based on edition number. Always preview to verify before downloading.

Select a folder containing JSON metadata files:


Batch Updates









Individual Edit




Preview Updated Metadata