File checksum verifier
Computes a file's SHA-256 hash to verify its integrity.
- Free
- No sign-up needed to try
- Runs in your browser
Sign in to use this tool
File checksum verifier is free once you're signed in — one quick account unlocks every tool on Alux Tools, no payment, ever.
How this works
The file's bytes are read locally and hashed with SHA-256 via the Web Crypto API, so you can compare it against a published checksum.
The file is read locally and never uploaded.
Frequently asked questions
Is the file checksum verifier free?
Yes. File checksum verifier is free to use, with no software to install and no hidden fees.
Is my data uploaded anywhere?
No. This tool runs entirely in your browser, so what you enter or select never leaves your device.
Does it work on phones and tablets?
Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux.