File checksum verifier

Verify a file against a checksum.

Algorithm

Expected checksum (optional)

Files are read and hashed in your browser — nothing is uploaded.

How it works

Three simple steps — all in your browser.

File checksum verifier runs entirely on your device — no upload, no account, and nothing to install.

Verify a file against a checksum. Everything happens instantly as you go.

Download or copy the output straight away. Your data never leaves your device.

File checksum verifier works locally in your browser — your files and text are never sent to a server.

No sign-up, no trial, and no usage limits. Open the tool and start straight away.

Runs in any modern browser on desktop, tablet or phone — nothing to download.

Is File checksum verifier free to use?

Yes — every tool here is completely free, with no account, sign-up, or usage limits.

Is anything uploaded to a server?

No. File checksum verifier runs entirely in your browser, so your data never leaves your device.

Do I need to install anything?

No. It works in any modern browser on desktop or mobile — there is nothing to download or install.

Does it work offline?

Once the page has loaded, the processing happens locally, so it keeps working even on a flaky connection.