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ToolzKit

Security

SHA-512 Hash Generator

Compute SHA-512 digests of text or files locally, with hex/base64 output and hash comparison.

Input

Text or file

SHA-512 Digest

Hex digest appears here.

Enter text or choose a file above. Everything is hashed locally using the Web Crypto API.

About the SHA-512 Hash Generator

Compute the SHA-512 cryptographic hash of text or a local file using your browser's native Web Crypto API. SHA-512 produces a longer, 64-byte digest than SHA-256, which some protocols and integrity checks prefer for additional collision margin.

How to use it

  1. 01Type or paste text, or select a file up to 25 MB.
  2. 02The SHA-512 digest is computed automatically and shown as hex and base64.
  3. 03Toggle uppercase hex output if needed.
  4. 04Paste an expected digest to verify a match, if you have one to check against.

Features

  • Handles both text and binary file input.
  • Simultaneous hex and base64 output.
  • Match/mismatch verification against a pasted expected value.
  • 25 MB file size guard for responsive in-browser processing.

Practical examples

Verifying software packages

Many distributions publish SHA-512 checksums alongside downloads; hash the downloaded file here and compare against the published value.

Generating longer content fingerprints

Use SHA-512 where a longer digest is required by a specification or internal standard, such as certain blockchain or archival formats.

Limitations

  • Files larger than 25 MB are rejected to keep the browser tab responsive.
  • SHA-512 is slower per byte than SHA-256 on 32-bit hardware, though this rarely matters for typical file sizes handled here.

Privacy

All hashing is performed locally using the Web Crypto API; no text or file data is ever sent to a server or persisted in storage.

Read the full privacy policy for how the site as a whole handles data.

Frequently asked questions

Is SHA-512 more secure than SHA-256?

Both are currently considered secure against practical collision attacks; SHA-512 offers a larger digest and different performance characteristics, not fundamentally 'more' security for typical use.

Can I hash very large files?

This tool caps files at 25 MB for browser responsiveness; larger files should be hashed with a desktop or command-line tool.

Why does crypto.subtle require HTTPS?

Browsers restrict powerful APIs like the Web Crypto subtle interface to secure contexts to prevent tampering over insecure connections.