Hash & verify files,
without the upload.
Compute MD5, SHA-1, SHA-256, SHA-512 and CRC32 for any file in your browser — then check it against a published checksum to confirm the download is intact.
How it works
- 1
Drop a file
Add any file — an installer, ISO, archive, anything. It's read locally and never uploaded.
- 2
Get every hash
MD5, SHA-1, SHA-256, SHA-512 and CRC32 are computed at once. Copy any of them with one click.
- 3
Verify it
Paste a checksum published by the source — we tell you instantly whether it matches.
Frequently asked questions
Is my file uploaded to a server?+
No. Hashing runs entirely in your browser using the built-in Web Crypto API. The file's bytes never leave your device.
Which hash algorithms are supported?+
MD5, SHA-1, SHA-256, SHA-512 and CRC32. SHA-256 is the most common for verifying downloads; MD5 and CRC32 are still widely used for quick integrity checks.
How do I verify a download?+
Sites often publish a checksum (e.g. a SHA-256) next to a download. Drop the file here, then paste that published value into the verify box. A green match means the file is intact and untampered.
Is there a file size limit?+
The file is read into memory to hash it, so very large files are limited by your device's available RAM. Typical downloads and ISOs work fine.
Is it free?+
Yes — free, no signup, no watermarks.