Generate HMAC signatures using a secret key and hash algorithm for API authentication. Code never leaves your device — formatting and validation run locally in your browser.
Content reviewed October 2026 · About Toolzum
Generate fake credit card numbers with valid formats including Visa, Mastercard, Amex, and Discover. All numbers pass Luhn algorithm validation. Code never leaves your device — formatting and validation run locally in your browser.
Generate TOTP URIs for two-factor authentication setup with authenticator apps. Code never leaves your device — formatting and validation run locally in your browser.
Generate password hashes using PBKDF2-SHA256 with 600,000 iterations for secure password storage. Code never leaves your device — formatting and validation run locally in your browser.
Translate pasted SRT or VTT subtitle text into 9 languages (Spanish, French, German, Japanese, Chinese, Hindi, Portuguese, Russian, Arabic) while preserving every timestamp — AI-powered with your own API key, text never stored.
Generate PGP key pairs with OpenPGP.js — public for sharing, private stays local. Encrypt mail like it's 1991 but working — local crypto, unlimited saves.
The secret key makes forgery impossible without it — plain hashes anyone can recompute.
SHA-256, SHA-384, or SHA-512 — pick one per run; SHA-256 is the standard default.
Hex only — the digest renders as lowercase hex to match API conventions expecting hex.
No — hashing runs locally in your browser, free with no signup.
Content Hash Generator
Compute SHA-1, SHA-256, SHA-384, or SHA-512 hashes of text content using the Web Crypto API. Code never leaves your device — formatting and validation run locally in your browser.
Webhook Signature Verifier
Verify webhook HMAC signatures to prove payloads came from the provider untampered. Reject forged events before processing — local crypto, free, no signup.