Choose an input to calculate its fingerprint.
Your original file stays in your browser. You can contribute its SHA-256, size and detected format, with an optional filename and text. Review everything before choosing Share for research.
New contributions are retained until manually removed, with an annual review. Administrators can view and export contributed records. You can remove contributions from this tab while it stays open.
Inspect or hash a file to prepare its contribution. Examples and text hashing are excluded.
Editable filename only. Folder paths are removed.
Up to 10 KB. Review and remove confidential details. Text is stored as plain text and is never executed.
We record counts of successful hash calculations and file inspections. Usage events contain no file contents, filenames, hashes or pasted text. Research contributions are separate and require your review and explicit submission.
How it works
Select a file or enter text, then calculate a SHA-family digest using the browser’s cryptographic API. Text is hashed as UTF-8 exactly as entered. Hashing requires HTTPS or localhost.
Know the boundary
A fingerprint identifies content for comparison. It is not a malware verdict or a check against a threat intelligence service.