Security & Crypto
JWT decoders, hash generators, password generators, and key utilities.
Popular in Security & Crypto
JWT Decoder & Token Inspector
Decode JWT header, payload, expiry, and structure in one private browser tool.
MD5, SHA1, SHA256 & SHA512 Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 and more hashes from text in one tool.
Secure Random Password Generator
Generate strong, cryptographically secure passwords with custom rules.
All Security & Crypto
JWT Token Generator (Mock)
Create mock JSON Web Tokens with custom claims for development and testing.
HMAC Generator
Generate production-ready hmac output directly in the browser.
CRC32 Calculator
Calculate the requested result instantly using browser-side logic.
Hash Comparison Tool
Provide a fast, privacy-first browser utility for hash comparison tool.
PBKDF2 Derivation Tool
Provide a fast, privacy-first browser utility for pbkdf2 derivation tool.
Scrypt Derivation Tool
Provide a fast, privacy-first browser utility for scrypt derivation tool.
Argon2 Playground
Test inputs interactively in a safe browser-side playground.
Hash String Normalizer
Provide a fast, privacy-first browser utility for hash string normalizer.
Checksum Manifest Generator
Generate production-ready checksum manifest output directly in the browser.
Subresource Integrity Generator
Generate production-ready subresource integrity output directly in the browser.
JWK Viewer
Inspect and understand the supplied data locally with a structured visual view.
JWKS Viewer
Inspect and understand the supplied data locally with a structured visual view.
OAuth Scope Builder
Generate production-ready oauth scope output directly in the browser.
OAuth State Generator
Generate production-ready oauth state output directly in the browser.
PKCE Code Generator
Generate production-ready pkce code output directly in the browser.
PKCE Challenge Verifier
Provide a fast, privacy-first browser utility for pkce challenge verifier.
API Key Generator
Generate production-ready api key output directly in the browser.
Secret Key Generator
Generate production-ready secret key output directly in the browser.
Bearer Token Parser
Inspect and understand the supplied data locally with a structured visual view.
Basic Auth Header Generator
Generate production-ready basic auth header output directly in the browser.
Authorization Header Builder
Generate production-ready authorization header output directly in the browser.
Token Entropy Calculator
Calculate the requested result instantly using browser-side logic.
Security and cryptography tools
Decode JWTs, generate secure hashes and passwords — all processed locally with zero data exposure.
JWT tools
Decode tokens, inspect claims, check expiration, and generate mock JWTs.
Hashing
SHA-256, SHA-512, MD5, and HMAC digest generation via Web Crypto API.
Passwords
Cryptographically secure password generation with custom rules.
Browse Other Categories
Popular across UtilityKit
JSON Formatter
Format and indent JSON for easier reading, sharing, and debugging.
Format JSON onlineJWT Decoder & Token Inspector
Decode JWT header, payload, expiry, and structure in one private browser tool.
Decode JWT tokensBase64 Encoder
Encode text, strings, and binary files into Base64 format online.
Encode Base64 textSecure Random Password Generator
Generate strong, cryptographically secure passwords with custom rules.
Generate passwords