I will fix nft metadata json errors for opensea and marketplaces

G
georgebernardd
G
georgebernardd
George B
fix nft metadata json errors for opensea and marketplaces
Full Screen
fix nft metadata json errors for opensea and marketplaces
Full Screen
fix nft metadata json errors for opensea and marketplacesfix nft metadata json errors for opensea and marketplaces

About this gig

Are your NFTs showing errors on OpenSea, missing traits, or broken metadata?

I provide professional NFT metadata fixing services to correct JSON issues, repair attributes, and ensure your NFTs display perfectly across marketplaces.

Whether your collection has upload errors, broken traits, or incorrect formatting, I will fix your NFT metadata so it becomes clean, valid, and marketplace-ready.

What I Fix:

  • NFT metadata JSON errors
  • Missing or broken attributes
  • OpenSea display issues
  • Trait & rarity mismatches
  • Metadata not updating correctly

Supported Blockchains:

  • Ethereum
  • Solana
  • Polygon

Ideal For:

  • NFT creators
  • Web3 startups
  • Developers
  • Existing NFT collections with errors

Message me before ordering for large collections or urgent fixes.

  • Operation

    • Generator development
Keep your assets and information safe.

NFT services focus solely on developing and programming.
Never share sensitive information with others, and make sure you own all required rights to the underlying asset. Read about NFTs on Fiverr

Get to know George B

George B

NFT metadata creation

  • FromUnited Kingdom
  • Member sinceJan 2026
  • Avg. response time3 hours

  • Languages

    English, German, French, Spanish
I am a dedicated NFT metadata specialist with strong experience creating clean, scalable, and marketplace-ready JSON metadata for NFT collections of all sizes. I help artists, Web3 founders, and blockchain projects launch NFTs professionally across Ethereum, Polygon, and Solana. My focus is on accurate structure, proper trait formatting, and full compatibility with marketplaces like OpenSea and popular minting tools. I deliver reliable metadata that supports smooth launches, rarity tools, and long-term project growth.