Question 1

What is a cryptographic hash?

Accepted Answer

A cryptographic hash is a fixed-length string of characters derived from input data. Even a tiny change in the input produces a completely different hash. It is computationally infeasible to reverse a hash back to the original input.

Question 2

Which hash algorithm should I use?

Accepted Answer

Use SHA-256 or SHA-512 for security purposes. SHA-1 is deprecated for security use but still seen in legacy systems. MD5 should not be used for security — only for checksums where collision resistance is not required.

Question 3

Is this hash generator safe?

Accepted Answer

Yes. This tool uses the browser's built-in WebCrypto API (window.crypto.subtle). Your text never leaves your device — all hashing is done locally in your browser.

Algorithm	Output Length	Security	Use
SHA-1	160 bits (40 hex)	Deprecated	Legacy checksums, Git
SHA-256	256 bits (64 hex)	Secure	Passwords, certificates, blockchain
SHA-384	384 bits (96 hex)	Secure	TLS certificates
SHA-512	512 bits (128 hex)	Very Secure	High-security applications

Hash Generator

SHA Hash Algorithm Comparison

Hash Generator

SHA Hash Algorithm Comparison

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