File integrity tools
Local checksum verifier
Verify a downloaded ISO, installer, archive, or entire checksum manifest without uploading the files. Large files are processed locally in bounded chunks.
Expected result
What should the file match?
0 / 1,000,000 characters
Local files
Choose what to process
Drop files hereor select them from this device
Files are read only after you start. Up to 2,048 files; no file-size limit.
Queue
Selected files
No files selected. Add an ISO, installer, archive, or any other file.
Processing is sequential to keep disk use predictable.
Know the boundary
Integrity is not authenticity.
A matching checksum proves that your file has the same bytes as the referenced checksum. It does not prove who created either one. Obtain checksums from a trusted, independent source and prefer SHA-256 or stronger when available.