Magic-byte & MIME hint lab
Everything runs offline in your tab: pick a snippet of bytes (≤2 KiB sampled for speed) or paste a hex dump. Matches are heuristic — pairing with linux file, Apache Tika, or bespoke signature tables stays mandatory before acting on uploads.
1. Provide bytes
Automatically strips spaces and commas. Larger files only sample leading bytes intentionally — upload nothing to our servers either way.
Leading bytes preview
— awaiting input —
Heuristic matches
Add bytes to see guesses.