Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text using the Web Crypto API.
The Hash Generator is a browser-based cryptographic hashing tool that lets you compute SHA-1, SHA-256, SHA-384, and SHA-512 digests from any input text. It uses the native Web Crypto API built into modern browsers, meaning your data never leaves your machine — everything is computed locally with zero server calls.
When you need this
Developers frequently need to verify file integrity, generate checksums, or compare hash outputs during debugging. Security engineers use it to quickly hash test inputs when validating authentication flows. The tool displays all four hash variants simultaneously so you can copy whichever format your workflow requires without re-entering the input.
Under the hood
The Web Crypto API’s SubtleCrypto.digest() method handles the actual hashing. The input text is first encoded to a Uint8Array via TextEncoder, then passed to the digest function for each algorithm in parallel. The resulting ArrayBuffer is converted to a hexadecimal string for display.
Security note
SHA-1 is included for compatibility and legacy use cases, but it is not recommended for security-sensitive applications. SHA-256 or SHA-512 should be preferred for any new implementation. This tool makes all options available so you can match whatever format your system requires.
Highlights
- SHA-1, SHA-256, SHA-384, SHA-512 — all computed in parallel
- Uses the native Web Crypto API for secure, local-only hashing
- One-click copy for each hash output
- Real-time computation as you type