CarenCart

Checksum Generator

Compare a file against a published checksum and get a clear match result.

Runs in your browser FreeNo sign-in Works without JavaScript

Choose your file

Pick the downloaded file, paste the published checksum, and compare.

Start over

With JavaScript on, this runs in your browser and nothing is uploaded.

How to use checksum generator

  1. Choose your FILE file. Drop the file onto the upload area or pick it from your device. The file is read straight into your browser and is not uploaded anywhere.
  2. Set the options. Adjust the settings shown for checksum generator. The defaults suit most files, so you can usually leave them alone.
  3. Check and save the result. Run the tool and download the hashes result. Compare it against your original before you rely on it — conversions do not always carry every detail across.

Privacy

By default this page does the work itself and your file never leaves the device. If JavaScript is unavailable, the form posts to the server instead, where the file is processed in a temporary folder and deleted as soon as the result is written. The result link works once and expires.

Questions

What happens to my file?

By default nothing leaves your device — the tool runs in your browser. If JavaScript is unavailable the same page falls back to a server form, where the file is processed in a temporary folder and deleted the moment the result is written.

What exactly do I get back?

A hashes file. A hash is a fixed-length fingerprint computed from data. The same input always produces the same digest, and any change to the input changes it completely.

Is this secure enough for confidential material?

This tool runs entirely on your own device, so the material never crosses the network. That is the strongest guarantee available in a browser — there is no server involved to trust.

Is there a file size limit?

In your browser the limit is your device memory rather than a fixed number. If the page falls back to the server — with JavaScript switched off — uploads are capped at 32 MB.

Working with hashes

About hashes

A hash is a fixed-length fingerprint computed from data. The same input always produces the same digest, and any change to the input changes it completely.

Hashing is one-way and is not encryption — a digest cannot be turned back into the original. MD5 and SHA-1 are broken for security purposes and should only be used to detect accidental corruption.

Troubleshooting

  • Nothing happens after choosing a file. Check the file really is FILE — a renamed extension fails here the same way it fails in other readers.
  • The upload is refused. Files over 32 MB are rejected. Split the document first, or use one of the browser-side tools, which are limited only by your device memory.
  • The result looks different from the original. Some conversions cannot carry every feature across formats. The page says what was dropped when that happens.