Security Tools

Protect your data with signing, verification, encryption and privacy utilities built to run locally in your browser for maximum security and data protection.

18 tools available

Blockchain Tools 3

BIP39 Mnemonic

Generate or validate BIP39 seed phrases (12-24 words), apply an optional passphrase (25th word), and derive the PBKDF2-HMAC-SHA512 512-bit seed hex.

Crypto Address Validator

Validate Bitcoin, Ethereum, Solana, Tron, Litecoin and 12 chains with real EIP-55, Base58Check and Bech32m checksum verification. Batch mode, CSV/JSON, in-browser.

Wallet Address Validator

Validate any wallet address offline: Bitcoin Base58Check + Bech32, Ethereum EIP-55, Solana, Tron, Cardano, Stellar. Batch CSV/JSON export, no API, in-browser.

Developer Tools 9

Encoding 1

Bcrypt Hash Generator

Generate bcrypt hashes online with selectable cost factor (4 to 14 rounds). Verify $2a, $2b, $2y hashes and audit cost to see if a hash needs rehashing.

Generators 4

TOTP Generator

Free online TOTP / 2FA code generator and verifier (RFC 6238). Paste a Base32 secret to see live codes, scan the QR with any authenticator, and verify codes.

.htaccess Generator

Free .htaccess generator: force HTTPS, WWW/non-WWW redirects with your real domain, GZIP, caching, bot blocking, Apache 2.4 security and custom 301 rules.

Password Generator

Free cryptographically secure password generator with real entropy (bits) and offline crack-time readout. Custom length, symbols, bulk output, NIST-aligned.

WiFi QR Generator

Generate branded WiFi QR codes with your logo and colors. Scan to auto-connect — no typing. WPA3/WPA2/WEP, open and hidden networks, scannability check.

Testing & Debugging 1

HTTP Header Viewer

HTTP header viewer with a security header scorecard: get an A+ to F grade for HSTS, CSP, X-Frame-Options, CORS, plus your own request headers.

Utilities 3

Diceware passphrase generator

Free Diceware passphrase generator using the EFF long wordlist and WebCrypto. Pick word count, separator, see entropy bits and crack-time estimates.

JavaScript Obfuscator

Free private JavaScript obfuscator. 100% browser-side, with presets, control-flow flattening, string-array encoding, Node.js target and reproducible seed.

Password Strength Tester

Check password strength with real-time entropy and brute-force crack-time analysis. Pick a GPU attacker model, test NIST 800-63B, generate secure passwords.

File Tools 2

File Hex Viewer

Open any file as a hex dump in your browser. View offsets, hex, ASCII. Auto-detect the file type from magic bytes and flag extension spoofing privately.

Hex File Compare

Diff two binary files byte by byte with side-by-side hex dump, offsets and ASCII. Get per-file SHA-256 and CRC32 checksums. 100% browser-side. Verify downloads.

Text Tools 1

Random Text Generator

Generate secure random passwords, strings, numbers, letters and UUID v4 with the Web Crypto API. Live entropy meter shows bits and offline crack time.