Hash generator

About Hash generator

What does Hash generator do?

Uses the browser Web Crypto API, so the hash is computed on your device. Useful for verifying a download matches a published checksum.

Who is it for?

Writers checking length against a limit, researchers cleaning up lists, developers encoding values, and anyone comparing two versions of a document.

Is it free?

Yes. Hash generator is free with no account, no watermark on your output, no daily cap and no trial period. Because it runs on your own device it costs us nothing to run, which is why there is no catch.

Is it safe to use with confidential files?

Yes, and not because we promise to behave. Hash generator never sends your file anywhere — the work happens in your browser. There is no upload, so there is no copy of your document in our systems at any point.

What file formats are supported?

Input: *.

Why is MD5 not offered?

MD5 is broken for anything security-related and the Web Crypto API deliberately does not implement it. If you need MD5 to match a legacy system, that is a reason to change the legacy system.

How to use it

1. 1

   Add your file

   Drag it onto the box above, or use Browse files. On a phone you can also take a photo or pick from your camera roll.

2. 2

   Check the settings

   Sensible defaults are already chosen. Most people never need to change them.

3. 3

   Run it

   The progress bar shows real progress, not a decorative animation. Everything happens on your device.

4. 4

   Preview the result

   Look at the output before you download. If it is not right, adjust a setting and run it again — nothing has been saved anywhere.

5. 5

   Download

   Save the file. Closing this tab discards it from memory, so download anything you want to keep.