Tools › Developer tools

File and text hash generator

Compute SHA-256, SHA-512, MD5, SHA-1, SHA-3 and Keccak-256 checksums of text or multi-gigabyte files, and compare them with a published hash.

Algorithms

Drop a file of any sizeor click to choose · Read in 8 MB chunks, so even 3 GB files workText

hello

Compare with a published checksum

How it works

Files are read in 8 MB chunks and all selected algorithms are fed in a single pass.
Paste a checksum from a download page to confirm the file was not tampered with.

Why not just use crypto.subtle?

WebCrypto needs the whole file in memory and lacks MD5 and Keccak. Streaming keeps 3 GB files working on any laptop.