Skip to main content
Z

SHA-256 Hash Generator — Free Web Crypto Hashing for Files

Compute SHA-256 digest of text or files in your browser using Web Crypto API. Output in hex or Base64.

Free No signup Client-side Privacy friendly Updated

— %

Hashing…

How to use

  1. 1 Pick Text or File mode.
  2. 2 Type / paste text, or choose a file (≤ 50 MB).
  3. 3 Pick output encoding (hex or Base64).
  4. 4 Copy the digest.

Why use this tool

  • Uses native Web Crypto API — hardware-accelerated where available.
  • SHA-256 is approved for general security use, including signatures.
  • Output in hex (64 chars) or Base64 (44 chars).
  • Pure client-side — files never upload.

Frequently asked questions

What is SHA-256 used for?

Cryptographic signatures, blockchain hashes (e.g. Bitcoin), TLS certificates, password storage when combined with a slow hash like PBKDF2, file integrity checks.

Does this work offline?

Yes — once the page loads, hashing runs entirely in your browser without internet.

Is the file uploaded?

No — files are read locally and hashed in-browser. Nothing leaves your device.

What is SHA-256 Hash Generator?

A SHA-256 Hash Generator is a tool that computes the SHA-256 message digest of text or files, producing a fixed-length cryptographic checksum of the input. It uses the browser's native Web Crypto API to perform the hashing and outputs the result in hexadecimal or Base64 encoding. The computation runs entirely in the browser, so the data being hashed is processed client-side and is never uploaded to a server.

Features

Web Crypto hashing

Uses the browser's audited SubtleCrypto.digest — fast and standards-compliant.

Hex or Base64

Output the 256-bit digest as 64 hex characters or as Base64.

100% private

Hashing happens locally — your text or file never reaches a server.

Example

Input

Hello, Zerethon!

Output

ae9b1bda5d8ddb6bd9d58eaff29f6a1940e1090fa534172258c3c79f6c7a4c9d

Common use cases

  1. 1

    Verify file integrity

    Match a SHA-256 checksum from a release page to confirm a download is untampered.

  2. 2

    Fingerprint content

    Generate a stable, collision-resistant identifier for a blob of data.

  3. 3

    Check a commitment

    Confirm data matches a previously published SHA-256 hash without revealing it early.

Summary

Zerethon's SHA-256 generator computes the FIPS 180-4 digest of text or files in your browser via the native Web Crypto API, with hex or Base64 output. SHA-256 is a current, collision-resistant cryptographic hash suitable for integrity verification and fingerprinting. Free, no signup, nothing uploaded.

Category
Developer
Pricing
Free
Privacy
Browser-based
Signup
Not required

References

Privacy

Your data never leaves your browser unless explicitly stated. SHA-256 Hash Generator runs entirely client-side — no server upload, no logging, no tracking of your input.

Compare

MD5 vs SHA-256 MD5 vs SHA-1 SHA-1 vs SHA-256

Learn the basics

What is Hash function?

How-to guides

How to generate an md5 hash

Related tools

JSON Formatter

Format, validate, and minify JSON online. Free, no signup — your data never leaves your browser.

Open tool

SQL Formatter

Format SQL queries online — beautify MySQL, PostgreSQL, SQLite, SQL Server, Oracle, and BigQuery.

Open tool

UUID Generator

Generate UUIDs online — v1, v4, v7, and Nil. Bulk generation up to 10,000. Free, no signup.

Open tool

Password Generator

Generate strong, cryptographically random passwords. Configurable length and character sets — runs in your browser.

Open tool

Build, share, and grow on Zerethon Social

Free signup. Earn points, collect achievements, and connect with creators worldwide.

Try Zerethon free