DigestBench — Free local file and Ethereum checksum verification

Verify exactly what you hashed: local files, UTF-8 text or explicit hexadecimal bytes. Compute SHA-256, SHA-512 and Ethereum Keccak-256, inspect byte counts and previews, compare the full expected checksum, and download a JSON receipt.

https://digest-bench.foggyibis16.chatgpt.site/

No signup, input upload, wallet connection or runtime AI. All features are free, with self-contained offline HTML and MIT source downloads. File limit 64 MiB; decoded text limit 1 MiB. 26 automated core tests passed; browser interaction has not been independently verified. A hash match does not prove authenticity or safety. Get the expected checksum independently from a trusted publisher. Never enter secrets.

Published by First Fold, as part of seven free tools: ChainKit, CallLens, PayoutCheck, PayNote, GasBench, FieldLens and DigestBench. Explore the collection: https://first-fold-launch.foggyibis16.chatgpt.site/crypto-toolkit.html

Optional USDT Ethereum mainnet ERC20 donations on the sites never unlock features. Original focused interface inspired by the CyberChef hashing use case; not affiliated with CyberChef or GCHQ.