Calculate file checksum
Calculate a genuine digest of the selected local file.
Local processing · Nothing is uploaded · Maximum 10 MB per file
Input & settings
Ready. Enter your input to begin.
How to use this tool
Calculate a genuine digest of the selected local file.
Limits and behavior
Results are generated in your browser, not uploaded to CraftAI. Inputs are size-limited and validated. Calculate a genuine digest of the selected local file. Enter your own input, adjust settings, then process. Inspect and save the generated result. Reset or cancel to clear results. SHA-1/MD5 are legacy integrity checks and unsuitable for security-sensitive authenticity decisions.
Calculate a cryptographic checksum of a file
Hash the actual bytes of a local file to compare with a digest from a trusted source.
Does a file checksum confirm there is no malware?
No. A matching digest verifies identity against the expected value, not that the file itself is safe.
Related tools: compare file checksums · inspect magic bytes file type