csvjson

Hash Generator

Generate SHA-1, SHA-256, SHA-384, or SHA-512 hashes from any text. Uses the Web Crypto API — nothing leaves your browser.

🔧

Hash Generator is coming soon. In the meantime, try the JSON → CSV converter, which has flattening built in.

How it works

Web Crypto API — no server needed

All hashing runs in the browser using the Web Crypto API's crypto.subtle.digest() function. No data is sent to any server. Results are identical to running the same algorithm server-side.

Example

Generating a SHA-256 checksum to verify file integrity

Input
Hello, World!
Output
dffd6021bb2bd5b0af676290809ec3a53191dd81c7f70a4b28688a362182986d

Frequently asked questions

Which algorithm should I use?

SHA-256 for most use cases. It's the current standard for file integrity, HMAC, and general hashing. SHA-1 is deprecated for security use. SHA-512 offers a larger output for higher-security applications.