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SHA-256 Hash Generator

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100% client-side — text and files are hashed with your browser's own Web Crypto API and never transmitted anywhere.

Generate a SHA-256 hash from text or a file live, on one page, entirely with your browser's own Web Crypto API — nothing is ever transmitted anywhere.

How it works

  1. Type text, or switch to the File tab and choose a file
  2. The SHA-256 hash updates live below — no button, files hashed locally, never uploaded
  3. Copy the hash or download it as a .txt file

Frequently asked questions

Does my text or file get sent to a server?

No — hashing runs through crypto.subtle.digest entirely in your browser, and nothing is ever transmitted.

Can text and file hashing both happen on this one page?

Yes, switch between the Text and File tabs without leaving the page.

Can I use SHA-256 for password storage?

Not recommended — a raw hash with no salt or key-stretching isn't safe for passwords. Use bcrypt or Argon2 instead.

#Sha256HashGenerator#Sha256OnlineClientSideProcessing#Sha256TextAndFileOnePage#Sha256HashLiveNoButton

Related tools

MD5 Hash Generator MD5 Hash Generator SHA1 Hash Generator SHA1 Hash Generator SHA-224 Hash Generator SHA-224 Hash Generator

From the blog

A SHA-256 tool with a 3.0/5 rating from 1,900+ votes doesn't explain whether your input is processed locally or sent to a server. Ours states it outright.
dev

A SHA-256 tool with a 3.0/5 rating from 1,900+ votes doesn't explain whether your input is processed locally or sent to a server. Ours states it outright.

We checked two SHA-256 tools directly: one needs a settings toggle for live updates and splits file hashing onto a separate page, the other uses Start/Stop buttons and never clarifies where your data actually goes. Ours is live, one page, and says plainly: nothing is ever transmitted.

2026-08-29

Update history

  • 2026-08-30 Added: a cover image — used as the card thumbnail, social share image, and blog title image.
  • 2026-08-29 Launched: live SHA-256 hashing (text and file, same page, no button) via Web Crypto API, explicit no-transmission disclosure, warning against password use.