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SHA-256 hash generator
Client-side SHA-256 for files and text. No uploads—ideal for building the hash field for API timestamp requests.
Privacy
Everything stays in your browser
SHA-256 is computed with the Web Crypto API on your device. Files and text are not sent to DataSeal, Supabase, or any other server. Clear the page or refresh and the data stays local unless you copy it yourself.
Input
Generate SHA-256 (hex)
Output is 64 lowercase hex characters, matching the Developer API hash field. Useful for testing api-create-timestamp. Sign in to access API keys.