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DevToolKit

Security Tools

17 tools

Security tools including hash generation, password strength checking, encryption utilities, and JWT decoding. Everything runs in your browser for maximum security.

Password Generator

Industrial-grade security key generator with CSPRNG, memorable passphrases, and real-time entropy analysis.

Password Strength Analyzer

Entropy calculation, crack-time estimates, and pattern weakness warnings.

Bcrypt Hash Generator

Generate and verify bcrypt hashes with configurable cost factor and auto-salting.

AES Encrypt/Decrypt Text

Securely encrypt and decrypt text using AES-256 GCM in your browser. Supports PBKDF2 passwords, raw hex keys, and custom initialization vectors.

BIP39 Mnemonic Generator

Securely generate and validate BIP39 recovery phrases with full language support and optional passphrases.

Digital Signature Validator

Verify X.509 certificates and PKCS#7 / CMS signature containers with detailed ASN.1 structural analysis.

RSA Key Pair Generator

Generate RSA-2048, RSA-3072, and RSA-4096 key pairs in PEM (PKCS#8/SPKI) and JWK formats with SHA-256 fingerprinting.

File Checksum Calculator

Calculate high-performance file checksums (MD5, SHA-1, SHA-256, SHA-512, BLAKE3) 100% in your browser. Supports large files and batch verification.

HMAC Generator

Generate secure HMAC codes using SHA-256, SHA-512, BLAKE3, and more. 100% private, client-side generation with support for Hex and Base64 inputs.

JWT Signature Architect

Create, sign, and debug JSON Web Tokens instantly. Supports HS256, RS256, and EdDSA. Built-in key generation, claim templates, and security auditing. 100% private.

JWT Security Sandbox

Instantly decode and verify JSON Web Tokens (JWT) locally. Supports JWS signatures, JWE decryption, and real-time claim analysis. 100% private.

TOTP/HOTP Code Generator

Generate and verify time-based and counter-based one-time passwords with live countdown, QR export, and configurable algorithms.

SAML Response/Request Decoder

Decode and inspect SAML Responses and Requests with auto-detection of Base64, DEFLATE, and raw XML. Extracts issuer, subject, attributes, conditions, and X.509 certificates.

Secure Notes

Create, encrypt, and store private notes locally in your browser using AES-256-GCM. Password-protected with auto-lock on inactivity.

PII Detector & Anonymizer

Detect and anonymize personally identifiable information. Finds emails, phone numbers, SSNs, credit cards, IPs, IBANs with Luhn validation and three anonymization modes.

String Obfuscator

Obfuscate JavaScript strings using array extraction, Base64 encoding, and Unicode escape sequences. Reversible encoding, not encryption.

SSL Certificate Checker

Audit SSL/TLS certificates, security headers, and CAA records. Shows issuer, expiration countdown, HSTS/CSP status, and an A+ to F security grade.