Evaluate password complexity in real time and check known breaches using k-anonymity. Your plain password never leaves your device.
This tool uses k-anonymity and only sends the first 5 characters of the SHA1 hash to the service; your full password and full hash never leave your device.
Encrypt or decrypt files locally with AES-256-GCM and download either the JSON payload or the restored file, all in the browser.
Convert PEM/DER/JWK/JWKS locally, export JWK/JWKS and PEM/DER, and inspect key details.
Free online ZIP Encryptor. Pack files into ZIP and encrypt with AES-256-GCM locally.
Lightweight, privacy-first online tools that run entirely in your browser. AES encryption and word counter are available now, more utilities coming soon.
Generate RSA-OAEP key pairs locally in your browser and export PEM public/private keys for testing and development.
Generate cryptographically secure random salt values locally in your browser with configurable length and Hex/Base64/Base64URL output formats, ideal for password hashing and token signing.
Securely generate various types of API keys with custom formats and batch generation, all locally in your browser.
Configure minimum/maximum range, count, uniqueness and output format to generate random integers using crypto.getRandomValues locally in your browser for draws, test data and simulations.
Edit JWT header and payload, choose HS256/HS384/HS512 or none, and generate signed tokens locally in your browser via Web Crypto without uploading secrets, ideal for API auth testing.
Free online JWT token decoder: decode header and payload, inspect signature segment format, and interpret common claims such as exp/nbf/iat, all locally in your browser with no token data uploaded.
Generate HMAC values locally in your browser using SHA-1 / SHA-256 / SHA-512 with text or hex keys, and view Hex and Base64 outputs without uploading any data.
Compute MD5 / SHA-1 / SHA-256 / SHA-512 hashes for text or files locally in your browser and optionally compare them with an expected value.
Encode or decode UTF-8 text to and from Base64, including URL-safe mode, with all processing done locally in your browser.
Generate Apple Developer certificate CSRs and RSA key pairs locally in your browser.
Legacy-compatible DES encrypt/decrypt tool with CBC/ECB modes and local-only processing.
Generate or verify bcrypt/argon2id password hashes locally in your browser with no uploads.