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Hash Generator

MD5, SHA-1, SHA-256 and SHA-512 via the SubtleCrypto API.

Free · No upload100% localInstant results

Coming soon

Hash Generator is being built and will ship in the next release. It will run 100% in your browser like every other StackPulse utility. The documentation below explains what it does and how it works.

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Why generate hashes of your text?

Cryptographic hashes are one-way functions that turn an arbitrary piece of text into a fixed-size digest: change a single character and the output changes beyond recognition. That makes hashes the backbone of checksums, integrity verification, password storage (with a salt), content-addressed storage and file deduplication. Knowing how to produce a SHA-256, SHA-512, SHA-1 or MD5 digest quickly is a daily need for anyone working with build pipelines, package registries and cloud storage.

This hash generator computes hashes using the native SubtleCrypto API built into modern browsers, which means the digest is generated locally on your device rather than by submitting your text to an untrusted website. MD5 and SHA-1 are supported for legacy compatibility — verifying old checksums, database columns and vendor fixtures — while SHA-256 and SHA-512 are the strong, recommended defaults for new work.

Because the computation never leaves the browser, you can safely hash passwords (for learning or testing — never unsalted in production), API keys, config fragments and any other sensitive string. Copy the digest to the clipboard or download all formats for your release notes and audits.

Common use cases

Verify the checksum of downloaded artifacts against published release hashes
Compare digests of configuration or fixture files across environments
Generate password hashes for test users and local development scaffolding
Produce content-addressed keys for caches, stored objects and deduplication
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How to generate a hash

  1. Type or paste the text you want to hash into the input field.
  2. Select the algorithm or let it show all of them: MD5, SHA-1, SHA-256 and SHA-512.
  3. Pick the output encoding — lowercase or uppercase hexadecimal.
  4. Press Hash or Ctrl / ⌘ + Enter to compute the digest instantly.
  5. Copy each digest with one click or download all results as a text file.

Test cases

Input · Hash of "hello" with SHA-256

2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824 (64 hex chars).

Input · Hash of "hello" with MD5

5d41402abc4b2a76b9719d911017c592 (32 hex chars).

Frequently asked questions

Which algorithm should I use?

SHA-256 is the default choice for new systems. SHA-512 is stronger and preferred when available. MD5 and SHA-1 are provided for legacy checksum verification only and are not cryptographically secure for password storage.

Can hashes be decoded back into the original text?

No. Hashes are one-way functions. The only way to recover a value is to guess candidates and compare their digests, which is why salted, slow hashing (bcrypt, scrypt, Argon2) is required for storing passwords.

Is my text sent to a server?

No. Hashing uses the browser's native Web Crypto API locally. The input and the digest never leave your device.