Security Tools
Security utilities for everyday use: check password strength, generate TOTP / 2FA codes, decode JWTs, and inspect cryptographic hashes. Everything runs locally in your browser — no credentials ever leave your device.
10 tools in this category.
Tools in Security Tools
JWT Decoder
Decode a JWT’s header and payload and check its expiration — without sending it anywhere.
Developer Tools
JWT Sign (HS256 / RS256)
Sign a JSON Web Token with HS256 (HMAC shared secret) or RS256 (RSA private key). Output is a standard compact JWT (header.payload.signature).
Security Tools
HMAC Generator
Compute a Hash-based Message Authentication Code (HMAC) for any message and shared secret. Supports SHA-256, SHA-512, SHA-1, and MD5. All computation runs in your browser.
Security Tools
Luhn / PAN Validator
Validate a credit or debit card number with the Luhn checksum, identify the scheme (Visa, Mastercard, Amex, Discover, JCB, UnionPay), and generate a display-safe mask.
Developer Tools
Password Generator
Create strong, random passwords with custom length and character sets — right in your browser.
Generators
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes of any text instantly.
Developer Tools
Password Strength Checker
See how strong a password really is — entropy, time-to-crack, and a list of issues, all computed in your browser.
Security Tools
TOTP Code Generator
Generate time-based one-time passwords (2FA codes) from a Base32 secret. Same algorithm as Google Authenticator.
Security Tools
EXIF / Image Metadata Viewer
Read EXIF, GPS, IPTC, and other metadata from any image. See camera, lens, location, and timestamp. Your image never leaves your device.
Image Tools
AES Encrypt / Decrypt
Encrypt or decrypt text with a password using AES-256-GCM. The encryption runs entirely in your browser, the password never leaves the page, and the result is a portable text envelope you can paste into an email, a chat, or a file.
Security Tools