Hash & Checksum

100% local. File contents and digests never leave this computer. Files are available only through selections you confirm in the system dialog.

Calculate

Hash one file, a batch, or a directory. Directory symlinks are skipped.

Nothing selected

MD5 and SHA-1 are cryptographically broken and are included only for compatibility. Fast hashes, CRC, and Adler are not suitable for security verification. SipHash and HighwayHash use an all-zero key when their key field is left blank. Selecting all algorithms is CPU intensive.

Output

Verify

Compare a local file with an expected digest. Hex comparison ignores case and surrounding whitespace.

Nothing selected

AlgorithmExpected encodingExpected digest

Compare Files

This compares calculated digests, not every byte directly.

Nothing selected

Algorithms Select one or more (Ctrl/Cmd-click).

Checksum manifests

Generate

GNU, BSD, or SFV with portable relative paths.

Nothing selectedAlgorithmFormat Include subdirectories

Verify

Absolute paths, traversal, UNC/drive paths, and symlink escapes are rejected.

Nothing selectedNothing selectedAlgorithm override (optional)

Job

No job running

File	Size	Algorithm	Digest	Status