Jetton & NFT metadata validator
Checks a jetton or NFT end to end: the TEP-64 content cell, the metadata URI, the JSON fields (name, symbol, decimals as a string, image), the image file type, size and dimensions, and what tonapi (Tonkeeper) actually shows.
Reads public chain dataUsers & developers
Your browser queries toncenter and tonapi directly. Metadata and image URLs are fetched through a small checker on this site, because most hosts send no CORS headers. Only the URL is passed on and nothing is stored.