Free online scrypt password hash generator with custom parameters, Web Crypto API client-side computation
scrypt is a memory-hard hash function designed to increase the cost of ASIC/GPU attacks. While bcrypt is also secure, it has lower memory requirements and is easier to accelerate with specialized hardware. scrypt's high memory requirement (controlled by the N parameter) makes large-scale parallel attacks economically impractical.
N (CPU/memory cost) is the most important parameter and must be a power of 2. Larger N = more secure but slower. r (block size) affects memory per iteration. p (parallelism) controls parallel threads. Recommended: N=16384 or 32768 for general use, N=65536+ for high security. r=8, p=1 are common defaults.
This is by design — slowness is security. By increasing computation time and memory consumption, brute-force attacks become economically impractical. If you need faster hashing, consider lowering N, but this reduces security.
Salt is random data that ensures the same password produces different hashes each time. This prevents rainbow table attacks and identification of identical passwords. Use a unique random salt (at least 16 bytes) for each hash.
Absolutely. All processing happens locally in your browser. No data is sent to any server, so there's zero risk of data leaks. Your information stays completely under your control.
scrypt Hash Generator has no usage limits — it's free and unlimited. Since processing is done client-side, speed depends on your device. For very large files, we recommend processing in batches for the best experience.
Yes, scrypt Hash Generator is completely free to use. No registration or login required — all features are available immediately.
Yes. scrypt Hash Generator is fully responsive and works on phones, tablets, and desktops. The interface adapts automatically to your screen size.
No. scrypt Hash Generator uses client-side processing — everything runs in your browser. Your data never leaves your device, and the tool works even without an internet connection.
No. scrypt Hash Generator is a web-based tool — just open it in your browser and start using it. No downloads, plugins, or extensions required.