Security & Privacy
Generate strong passwords, inspect JWTs, encrypt files with AES-GCM, analyze crack times, and verify hashes.
All Security & Privacy
Every tool runs 100% locally in your browser with zero server uploads.
Strong Password Generator
Generate cryptographically secure random passwords and readable passphrases with entropy and crack-time metrics.
JWT (JSON Web Token) Decoder
Decode and inspect JSON Web Tokens locally in your browser. View formatted header, payload, and live expiration status.
Client-Side File Encryptor & Decryptor
Encrypt and password-protect any file locally in your browser using military-grade AES-GCM 256-bit encryption.
Password Strength & Crack-Time Analyzer
Inspect password entropy, detect repeated patterns and dictionary words, and estimate brute-force cracking resistance.
File Checksum & Hash Comparator
Compare two files or verify a downloaded file against an official SHA-256 or MD5 checksum to ensure software integrity.
Secure Random Token & API Key Generator
Generate cryptographically random Hex, Base64, and URL-safe API keys, auth tokens, session secrets, and salt strings.
Image Steganography (Hide Text in Image)
Hide confidential text messages inside PNG images using Least Significant Bit (LSB) pixel encoding, or extract hidden secrets.
HTTP Security Headers Builder
Build hardened HTTP security headers (CSP, HSTS, X-Frame-Options, Permissions-Policy) for Nginx, Apache, and Cloudflare.
HMAC Keyed-Hash Authenticator
Generate Hash-based Message Authentication Codes (HMAC) with secret keys using SHA-256, SHA-384, SHA-512, or SHA-1.
RSA Public & Private Key Pair Generator
Generate 2048-bit and 4096-bit RSA cryptographic key pairs in standard PKCS#8 and SPKI PEM format using the native browser Web Crypto API.
SHA-3 & Keccak-256 Cryptographic Hasher
Compute Keccak-256 (Ethereum Web3) and NIST standard SHA3-224, SHA3-256, SHA3-384, and SHA3-512 cryptographic digests for text and hex inputs.
Base58 & Base58Check Encoder / Decoder
Encode and decode binary and text strings using Bitcoin and IPFS Base58 alphabet (excluding confusing characters 0, O, I, and l).
TOTP 2FA Secret Key & Code Generator
Generate RFC 6238 Two-Factor Authentication (2FA) Base32 secret keys, otpauth:// QR URIs, and verify live 30-second 6-digit rolling OTP codes.
BIP-39 Mnemonic Seed Phrase Generator
Generate 12, 18, or 24-word cryptographically secure mnemonic seed phrases using the official BIP-39 English wordlist and Web Crypto CSPRNG.
URL & IP Defanger / Refanger for Cyber Security
Safely defang malicious URLs, domains, and IP addresses (e.g. hxxps[://]bad[.]site[.]com) to prevent accidental clicking in security reports.
CORS Misconfiguration & Policy Tester
Inspect and diagnose Cross-Origin Resource Sharing (CORS) configurations, wildcard origin vulnerabilities, and preflight headers.
JWT Debugger & Token Claims Inspector
Decode and inspect JSON Web Tokens (JWT) header, payload claims, expiration (exp), and issue time (iat) 100% locally without sending tokens over the internet.
Subresource Integrity (SRI) Hash Builder
Compute cryptographic Subresource Integrity (SRI) hashes (SHA-256, SHA-384, SHA-512) for CDN scripts and generate valid HTML <script> tags.
Sensitive Data & PII Redactor / Masker
Scan text logs and documents to detect and automatically mask sensitive PII (Social Security Numbers, Credit Cards, Email Addresses, Phone Numbers, and API Keys).
ASCII Armor & PGP Block Formatter
Format, validate, and clean PGP ASCII Armor blocks (Public Keys, Encrypted Messages, Signatures) with header diagnostics and base64 repair.
Argon2 & Scrypt Password Key Derivation Calculator
Calculate and benchmark memory-hard password hashing parameters (Argon2id, Scrypt, PBKDF2). Estimate RAM usage, iteration costs, and GPU resistance.
File Magic Bytes & True MIME Type Signature Inspector
Inspect raw binary file headers (Magic Numbers) to identify the authentic file type, detecting malicious executable files disguised as innocent JPGs or PDFs.
In-Browser Image Steganography (Hide Text in Image)
Conceal secret confidential messages and cryptographic keys inside harmless PNG images using Least Significant Bit (LSB) pixel encoding, or decode hidden text.
DNS Record Inspector & DNS-over-HTTPS (DoH) Client
Query live DNS records (A, AAAA, CNAME, MX, TXT, NS, SOA) directly from your browser using Cloudflare / Google DNS-over-HTTPS with zero ISP interception.
HTML Entity & XSS Sanitization Security Encoder
Neutralize Cross-Site Scripting (XSS) vectors by escaping dangerous characters (brackets, quotes, and ampersands) into safe HTML entities or decimal/hex entities.
IPv4 Subnet Mask & CIDR Block Network Calculator
Calculate usable IP host ranges, network addresses, broadcast addresses, wildcard masks, and subnets from any IPv4 address and CIDR prefix (/24, /16).
Hexadecimal to ASCII, Binary, Octal & Decimal Inspector
Convert hex dumps, machine codes, and network payloads into readable ASCII text, binary byte sequences (01001000...), decimal integers, and octal representations.
Random IEEE 802 MAC Address Generator & OUI Formatter
Generate random valid MAC addresses (Media Access Control) with customizable OUI vendor prefixes (Apple, Cisco, Intel), unicast/multicast bits, and colon/hyphen formatting.
HTTP Set-Cookie Header & Security Flag Auditor
Paste an HTTP `Set-Cookie` header to audit critical cybersecurity attributes: `Secure`, `HttpOnly`, `SameSite` (Strict/Lax/None), expiration dates, and domain scope.
Base32 (RFC 4648) & Crockford Base32 Encoder / Decoder
Encode and decode standard RFC 4648 Base32 strings and Crockford Base32 human-friendly codes used in 2FA TOTP secrets, authentication tokens, and short URLs.
Password Entropy & Crack Time Estimator
Calculate true Shannon entropy bits and simulate brute-force cracking resistance across web attacks and multi-GPU cluster rigs.
TOTP / 2FA Code Generator (Offline)
Generate RFC 6238 TOTP (Time-based One-Time Password) authentication codes from any Base32 secret key — works completely offline without any app.
Content Security Policy (CSP) Header Builder
Interactively build a Content-Security-Policy HTTP header with all directives, get an instant policy string, and understand each directive's security impact.
Robots.txt File Generator
Generate a valid robots.txt file for any website — configure User-agent rules, Disallow/Allow paths, crawl delay, and sitemap URL with instant preview.
Unix chmod Permission Calculator
Calculate Unix file permissions interactively — toggle read/write/execute for owner/group/other and get the chmod numeric (e.g. 755) and symbolic output.
Robots.txt File Generator
Generate a valid robots.txt file for any website — configure User-agent rules, Disallow/Allow paths, crawl delay, and sitemap URL with instant preview.
Unix chmod Permission Calculator
Calculate Unix file permissions interactively — toggle read/write/execute for owner/group/other and get the chmod numeric (e.g. 755) and symbolic output.
Bcrypt Hash Generator & Verifier
Generate secure bcrypt password hashes ($2a$, $2b$) with custom cost salt rounds and verify passwords.
Whirlpool Hash Generator
Compute 512-bit Whirlpool cryptographic hash checksums from text strings or passwords.
SHA-3 (Keccak) Hash Generator
Generate NIST standard SHA-3 cryptographic hashes: SHA3-224, SHA3-256, SHA3-384, and SHA3-512.
MD2 Hash Generator
Compute RFC 1319 MD2 message digest hashes for text strings and binary inputs with instant HEX output.
MD4 Hash Generator
Generate 128-bit RFC 1320 MD4 cryptographic checksums with HMAC keying support and live verification.
MD5 Hash Generator
Fast 128-bit RFC 1321 MD5 hash calculator with file drag-and-drop, uppercase/lowercase formatting, and checksum validation.
SHA-1 Hash Generator
Compute FIPS PUB 180-4 SHA-1 160-bit cryptographic checksums for Git commit validation and legacy file verification.
SHA-224 Hash Generator
Calculate 224-bit FIPS PUB 180-4 SHA-224 cryptographic digests tailored for two-key Triple-DES matching security.
SHA-256 Hash Generator
Industry-standard 256-bit SHA-2 cryptographic hash calculator with instant hardware-accelerated Web Crypto execution.
SHA-384 Hash Generator
Compute 384-bit SHA-2 hashes conforming to NSA Suite B and TLS 1.3 high-assurance cryptographic standards.
SHA-512 Hash Generator
Calculate full 512-bit (128-character) SHA-2 cryptographic digests for maximum collision resistance and entropy verification.
SHA-512/224 Hash Generator
Generate FIPS 180-4 SHA-512/224 truncated hashes optimized for 64-bit architectures immune to length extension attacks.
SHA-512/256 Hash Generator
Compute FIPS 180-4 SHA-512/256 hashes providing 256-bit collision resistance with 64-bit CPU performance and anti-extension security.
SHA-3/224 Hash Generator
Compute NIST FIPS 202 SHA-3/224 sponge-construction cryptographic hashes with complete immunity to length extension.
SHA-3/256 Hash Generator
Calculate official NIST FIPS 202 SHA-3/256 Keccak cryptographic hashes with live comparison and byte inspection.
SHA-3/384 Hash Generator
Compute high-security 384-bit NIST FIPS 202 SHA-3 Keccak digests for advanced cryptographic and post-quantum protocols.
SHA-3/512 Hash Generator
Generate full 512-bit (128-character) NIST FIPS 202 SHA-3 cryptographic digests with maximum collision resistance.