Files & organization · ONLINE TOOL

Create & verify a SHA-256 manifest

Create a SHA-256 reference, then later check verified, changed, missing or unexpected files.

Local processingNo account required

USE CASES

When to use Create & verify a SHA-256 manifest?

Create a reusable SHA-256 manifest, then later verify that a batch still contains exactly the same bytes without modifying any files.

CONCRETE EXAMPLE

BEFORE

Release folder · 318 files · reference state to freeze

→

AFTER

.sha256 + CSV manifest · later check: 315 verified · 1 changed · 1 missing · 1 unexpected

PRIVACY

Processed content is not uploaded to WorkToolset. Required libraries may be loaded by the site, but the file stays in the browser.

GOOD TO KNOW

SHA-256 proves binary identity against the manifest; it does not prove authorship, provenance or manifest authenticity.
Relative paths must match: a rename appears as one missing file and one unexpected file.
Web Crypto must read files in full to hash them; very large files can use substantial memory.
A manifest stored alongside the files it protects can be replaced together with them; keep the reference separately when integrity matters.

HOW IT WORKS

1Choose a folder or files and review the volume that must be read.
2Create the SHA-256 manifest, then keep it in a trusted location separate from the batch.
3To verify, load the manifest and the corresponding current folder.

PRIVACY

Are my files uploaded to WorkToolset?

No. This tool runs locally in your browser.

Is my original file modified?

No. WorkToolset creates a new copy or export.

Do I need an account?

No for this free tool. Accounts are mainly used for favorites, presets and future workflows.