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§ · free tool

Hash generator. Checksums that never leave your device.

SHA-1, SHA-256, SHA-384 and SHA-512 for any text or file, computed on your device with the browser's Web Crypto API. Nothing is uploaded, ever.

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A free online tool by Digital Heroes
Why no MD5? The browser's Web Crypto API doesn't include MD5 (it's cryptographically broken). For integrity and security use SHA-256 or stronger, it's the recommended default here.

Checksums, without the command line

A cryptographic hash is a fixed-length fingerprint of your data, change one byte and the whole hash changes. Type or paste text and all four digests update live; drop in a file (an installer, a backup, a build artifact) and the tool reads it locally with a progress bar, then hashes it with the browser's built-in Web Crypto API. Paste a published checksum into the verify field and it instantly tells you which algorithm matches, the same job as sha256sum or shasum -a 512, with no terminal and no upload. Free forever, no account.

§ 02 · what you can do

Four algorithms, zero uploads.

Hash any textLive updates as you type across SHA-1, SHA-256, SHA-384 and SHA-512 at once.
Hash any fileAny type, any size, drag and drop or click to browse. Read locally, never uploaded.
Verify checksumsPaste a published hash and get an instant match / no-match against every computed digest.
Copy in one clickEach algorithm has its own copy button, grab exactly the digest you need.
Watch large files readA progress bar tracks the local file read, so multi-gigabyte hashes aren't a mystery.
Private by constructionEverything runs on your device via the Web Crypto API. No server, no account, no limits.
§ 03 · how to use it

Four steps, no install.

  1. Choose the Text tab to type or paste text, or the File tab to drop or browse for a file.
  2. All four hashes, SHA-1, SHA-256, SHA-384 and SHA-512, compute instantly on your device.
  3. Click Copy next to whichever algorithm you need.
  4. Optionally paste an expected checksum into the Verify field to confirm a match.
§ 04 · faq

Frequently asked questions.

Is the Hash Generator free?
Yes, completely free for everyone. No sign-up, no account and no usage limits.
Is it private? Are my files uploaded anywhere?
No upload, ever. Text and files are hashed entirely in your browser with the Web Crypto API, your data never leaves your device and no server ever sees it.
Does it work offline?
Yes, once the page has loaded, hashing text and files keeps working without a connection, because every calculation runs locally on your device.
Which algorithms are supported?
SHA-1 (160-bit, kept for legacy comparisons), SHA-256, SHA-384 and SHA-512, all four are computed simultaneously for whatever you type or drop in, so you can copy whichever one a vendor or docs page asks for.
Why is there no MD5 option?
The browser's Web Crypto API deliberately leaves MD5 out because it's cryptographically broken, collisions can be manufactured. For file integrity or any security use, SHA-256 or stronger is the right choice.
How do I verify a downloaded file's checksum?
Switch to the File tab, drop in the file you downloaded, then paste the checksum published by the vendor into the Verify field. The tool tells you immediately whether it matches any of the computed hashes, and which algorithm it is.

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