File Hash Checksum Tool
Generate SHA-256 file checksums locally in the browser and export the results as CSV for verification or release notes.
Drop files to hash locally
Generate SHA-256 checksums for downloads, releases, archives, and file handoff verification.
Uses the browser SubtleCrypto API. Very large files may take time because they must be read locally.
Checksums
Files0
StatusReady
AlgorithmSHA-256
Common use cases
Publish checksums for release ZIPs, verify file handoffs, compare backups, or document delivered files.
Local only
Files are read in your browser and hashed with Web Crypto. They are not uploaded by this page.
Not malware scanning
A checksum verifies identity, not safety. It does not tell whether a file is malicious.
How to use this tool
- Drop one or more files.
- Generate SHA-256 checksums with the browser Web Crypto API.
- Copy the table or download the CSV.
- Compare hashes with the expected release or handoff record.
Common use cases
- Publish release checksums.
- Verify delivered file identity.
- Compare backups or archives.
Related tools
FAQ
Does a checksum prove a file is safe?
No. A checksum verifies identity, not whether a file is malware-free.
Are files uploaded?
Files are read locally by the browser and hashed with Web Crypto where supported.