Check a file’s hash, without uploading it
Drop any file to compute its checksums, then compare them with the value the download page lists. Everything runs on your own device, so it is safe for sensitive files and works for huge ones: the file is read in small pieces and never sent anywhere.
Drop a file, or click to browse
Drop files anywhere, or click to browse. Hashed on your device, never uploaded.
You can also drop the .sha256 or .md5 file that came with the download.
Checksums are computed on your device. Files are never uploaded, and there is no size limit.
How to verify a download
- Drop the file you downloaded into the box above.
- Paste the checksum from the download page into the compare field, or drop the small .sha256 or .md5 file that came with the download.
- Read the verdict. A match means your copy is byte-for-byte identical to the file the publisher released.
Why checksums matter
A checksum is a short fingerprint of a file. If even one byte changes, through a broken download, a failing disk, or tampering, the fingerprint changes completely. Publishers list checksums so you can confirm the file you received is exactly the file they released. Checking takes seconds and catches problems before you open or install anything.
Supported algorithms
MD5, SHA-1, SHA-256, SHA-384, SHA-512, BLAKE3 and CRC-32, all computed in a single pass over the file. The compare field recognises the algorithm automatically from the length of the value you paste.