Why compute Hashes in the Browser?
Cryptographic hash functions like SHA-256 are one-way algorithms that transform an input string of any length into a fixed-size signature. Developers use this for verifying data integrity, storing passwords securely, and signing API requests.
Because you may need to hash an API Secret Key or a confidential database password, typing that string into a standard, backend-hosted web tool is extremely dangerous. This tool utilizes the browser-native window.crypto.subtle.digest() function. This guarantees that the string you type is never transmitted over the internet, providing absolute zero-knowledge security.
Frequently Asked Questions
Is it safe to generate hashes for sensitive passwords or API keys here?
Yes. This tool computes cryptographic hashes strictly client-side using the browser Web Crypto API (crypto.subtle.digest). No strings or hashes are ever transmitted across the internet.
What is the difference between SHA-256, SHA-384, and SHA-512?
All three belong to the SHA-2 family. SHA-256 produces a 256-bit (64 hex character) hash, SHA-384 produces a 384-bit (96 hex character) hash, and SHA-512 produces a 512-bit (128 hex character) hash offering higher collision resistance.
Can a SHA-256 hash be decrypted back to the original text?
No. Cryptographic hash functions are one-way mathematical algorithms designed to be irreversible.