When do I need this tool?

When your images live at a new IPFS CID but your JSON files still point at the old one. Upload the JSON files, paste the new images base URL, update, and download.

Do my files get uploaded anywhere?

No. Parsing and rewriting happen locally in your browser. Nothing is sent to Genfty servers.

What should the base URL look like?

An IPFS gateway or native URL ending with a slash, for example https://ipfs.io/ipfs/ / or ipfs:// /

All free tools

Fix metadata

Batch Update the Metadata of Your NFTs Online

Point all your metadata JSON files at the new images IPFS CID in one batch — free, no code, no account, files never leave your browser.

Up to 10,000 files 100% private Free forever

Upload JSON files

Select your metadata .json files (max 10,000 / 100 MB).

Uploaded files: 0

Set images base URL

Every image field will point at this CID base URL.

Example: https://ipfs.io/ipfs/bafybeibpbcohpby7redkk7y3txbsxqzg5vi3kki52vjfhcszgkotgmbwma/

You can preview the result before downloading.

Preview & download

Check one file, then export the whole batch as ZIP.

No file yet

Upload files to see a live preview here.

Upload

Drop your metadata JSON files. Nothing is sent anywhere.

Paste CID URL

Use the new images folder URL ending with a slash.

Download ZIP

Preview one file, then export all updated JSON.