Generate RSA-OAEP key pairs locally in your browser and export PEM-formatted public/private keys for testing and development.
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 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.
Evaluate password length, character types, diversity and common patterns, and combine this with database breach checks via k-anonymity so only hash prefixes are sent and your plain password stays on your device.
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.