Compare the bytes
A matching hash means the file matches the expected content under the selected algorithm. A mismatch is a reason to check the source or the copy.
Hash your files
Read once and get both hashes. Choose which one to show or export.
Drop files here
Up to 128 MiB per file. Nothing is uploaded.
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What a checksum proves
Use the right algorithm
SHA-256 is the modern choice. MD5 is included for existing checksum lists and Drive metadata, not for security against deliberate forgery.
Keep the original
Hash-Desk only reads files. It does not rename, modify, upload or store them. Exported manifests contain names and hashes, never file contents.