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Security & Identity Tools

Comprehensive collection of free browser-based security tools for password generation, hash calculation, HMAC computation, JWT inspection, UUID and NanoID creation, and password strength analysis — all running locally.

9 tools · 7 subcategories

Password Generators

Free cryptographically secure password generator with configurable length, character classes, and ambiguity exclusion.

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Try itPassword and Passphrase GeneratorCreate strong, random passwords instantly with customizable length and character types. Client-side — no storage.

Hash & HMAC Generators

Free hash generator for MD5, SHA-1, SHA-256, SHA-384, and SHA-512 using the browser Web Crypto API.

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Try itHash GeneratorGenerate MD5, SHA-1, SHA-256, and SHA-512 hashes from text using Web Crypto API. Hardware-accelerated, client-side.
Try itJWT DecoderDecode JWT tokens instantly. View header, payload, and signature — client-side, no upload.

JWT Inspector

Free JWT decoder and inspector with collapsible tree view, standard claim display, and type-aware formatting.

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Try itJWT Tree ViewerView JWT structure as interactive tree with expand/collapse claims. Client-side — no upload.

JWT Validator

Free JWT signature validator for HS256, HS384, and HS512 with claim validation and detailed status reporting.

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Try itHMAC JWT VerifierVerify JWT signatures instantly with expiration and claims checking. Client-side — no upload.

UUID & NanoID Generators

Free UUID v4 and NanoID generator with batch quantity, custom length, and custom alphabet options.

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Try itUUID GeneratorGenerate UUID v4 identifiers instantly. Cryptographically random — client-side, no upload.
Try itNano ID GeneratorGenerate NanoID strings instantly with customizable length and alphabet. Client-side — no upload.

Password Strength Checker

Free password strength checker with weakness analysis, pattern detection, and estimated crack time reporting.

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Try itPassword Strength CheckerCheck password strength instantly with entropy calculation and breach detection. Client-side — no upload.

HMAC Generator

Free HMAC generator for SHA-256, SHA-384, and SHA-512 with configurable output encoding formats.

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Try itHMAC Authentication Code GeneratorGenerate HMAC-SHA256 signatures instantly. Client-side Web Crypto API — no upload needed.
Are these tools private and available offline?

Processing happens locally in browser memory. After the application has been cached, supported tools can continue working offline without sending your input to a server.

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