Developer

Client-Side Hash Generator

Generate checksums locally without uploading files. Processing stays on your device.

How to Use

  1. Paste text or choose a file.
  2. Generate MD5 / SHA-256 / SHA-512 digests.
  3. Copy the hex hashes you need.

Key Features & Privacy Advantage

  • All processing happens locally in your browser. Your files are never uploaded to a server.
  • Web Crypto for SHA-256/512.
  • SparkMD5 for MD5.
  • Text and file modes.

Technical Breakdown

Web Crypto subtle.digest provides SHA-256 and SHA-512. MD5 uses SparkMD5 for legacy checksum compatibility — prefer SHA-256 for security-sensitive integrity checks.

Frequently Asked Questions

Are files uploaded?

No. All processing happens locally in your browser. Your files are never uploaded to a server.

Is MD5 secure?

MD5 is fine for casual checksums, not password storage or collision-resistant security.

Hex vs base64?

This tool outputs lowercase hex digests.

Large files?

Hashing reads the file in the browser; very large files may take time.