Hash Generator
Type or paste text, drop in a file, or switch on HMAC with a key to see SHA-1, SHA-256, SHA-384, and SHA-512 digests in hex — computed locally with the Web Crypto API.
How to generate a hash
From text to digest in four steps.
- 1
Type or paste your text
Drop any string into the input — a token, a file’s contents, a message, or anything else you want a digest for.
- 2
See every digest instantly
SHA-1, SHA-256, SHA-384, and SHA-512 hashes appear immediately in hex, recomputed live on every change.
- 3
Copy the hash you need
Grab any digest with one click to verify a download, compare a checksum, or paste it wherever it’s required.
- 4
Store the real secrets in Envless
Keep the tokens and keys you’re hashing or verifying end-to-end encrypted in Envless, so your team can share and rotate them without plaintext exposure.
Why use the Envless hash generator?
Real Web Crypto digests from a team that builds encrypted secret management for a living.
Four SHA algorithms at once
See SHA-1, SHA-256, SHA-384, and SHA-512 digests side by side from a single input, so you can compare them or grab the exact one you need.
Real Web Crypto digests
Hashes are computed with the browser’s native crypto.subtle.digest — the same audited Web Crypto API used by production apps, not a hand-rolled JavaScript shim.
Instant, live results
Digests update as you type. There’s no Generate button to click and no waiting — every keystroke recomputes all four hashes immediately.
100% client-side
Your input never leaves your device. There are no uploads, no logging, and no network calls — every byte is hashed locally in your browser.
File hashing and HMAC mode
Drag in or pick a file to fingerprint it locally — it’s never uploaded — or switch on HMAC mode and add a key for keyed HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512 digests.
Hash generator FAQ
Everything you need to know about generating cryptographic hashes locally.
Yes. Every digest is computed in your browser with the Web Crypto API. Your input never leaves your device — there are no uploads, no logging, and no network requests.
SHA-1, SHA-256, SHA-384, and SHA-512, all shown as hexadecimal. SHA-256 and SHA-512 are the most common choices for modern integrity checks and fingerprints.
SHA-256 and the rest of the SHA-2 family are considered secure for integrity and fingerprinting today. MD5 and SHA-1 are not collision-resistant, so MD5 is left out — the Web Crypto API doesn’t provide it — and SHA-1 is included only for legacy checksums.
A cryptographic hash is a fixed-length fingerprint of data. It’s used to verify file integrity, compare downloads against published checksums, deduplicate content, and detect whether something has changed.
You can, but don’t store the result as a password hash. A raw SHA digest is fast and unsalted, which makes it weak against brute-force and rainbow-table attacks. Use a dedicated password hash like bcrypt, argon2, or scrypt with a per-user salt instead.
Use Envless to keep the tokens, keys, and credentials you’re hashing or verifying end-to-end encrypted, so your team can share, rotate, and audit access without exposing plaintext or pasting it into chat.
Yes. Drop in or choose a file and its SHA digests are computed entirely in your browser — the file hash is calculated on your device and the file is never uploaded. You can also turn on HMAC mode, enter a secret key, and produce keyed HMAC-SHA-256, HMAC-SHA-384, or HMAC-SHA-512 hashes locally.
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