Encoding
Encode and decode Base64, URL, HTML entities, hashes, and ciphers. Generate UUIDs, JWTs, HMACs, and cryptographic hashes — all computed locally with no server round-trips.
- Base64 Encode / Decode
Base64 Encode / Decode — Convert any text to Base64, or decode Base64 back to readable text. Full unicode support.
- URL Encoder / Decoder
URL Encoder / Decoder — Encode or decode URL strings — single component or full URL — with proper percent-encoding.
- HTML Entity Encoder / Decoder
HTML Entity Encoder / Decoder — Convert text to safe HTML entities, or decode entities back to characters. Minimal, named, or numeric output.
- Hash Generator
Hash Generator — Hash any text with MD5, SHA-1, SHA-256, SHA-384, or SHA-512 — all client-side via Web Crypto.
- Binary ↔ Text Converter
Binary ↔ Text Converter — Convert any text into binary (UTF-8 encoded), or decode binary back to text. Runs entirely client-side inside your browser.
- ROT13 / Caesar Cipher
ROT13 / Caesar Cipher — Apply a Caesar shift to text. ROT13 is the famous self-inverse version. Useful for puzzles, spoilers, light obfuscation.
- Morse Code Translator
Morse Code Translator — Translate text to and from International Morse Code — dots, dashes, slashes between words.
- Hex ↔ Text Converter
Hex ↔ Text Converter — Convert text to hexadecimal bytes (UTF-8) or decode hex back to text. Forgiving input — ignores 0x prefixes, commas, and spaces.
- ASCII Codes Converter
ASCII Codes Converter — Turn text into a list of ASCII or Unicode code points in decimal or hex — and convert code points back into text.
- Base32 / Base58 Encoder & Decoder
Base32 / Base58 Encoder & Decoder — Encode and decode Base32 (RFC 4648), Base32-hex, and Base58 (Bitcoin / IPFS). Sister tools to our Base64 encoder.
- Punycode Converter
Punycode Converter — Convert between Punycode (ASCII-safe encoding) and Unicode domain names. Essential for working with internationalized domain names ...
- Bcrypt Generator
Bcrypt Generator — Generate bcrypt password hashes with a configurable cost factor. Enter a password and get a secure bcrypt hash instantly.
- ASCII Converter
Free online ASCII converter. Convert text to decimal, hex, octal, and binary ASCII codes and back. Includes full ASCII character reference table.
- Binary Converter
Binary Converter — Convert numbers between binary, decimal, octal, and hexadecimal bases. Runs entirely client-side inside your browser.
- Octal Converter
Octal Converter — Convert octal numbers to decimal, hexadecimal, and binary. Runs entirely client-side inside your browser.
- HTML Entity Converter
Free online HTML entity converter. Encode text to named, decimal, or hex HTML entities and decode entities back to text.
- IDN Punycode Converter
IDN Punycode Converter — Convert internationalized domain names (IDN) to Punycode (xn-- format) and back. Runs entirely client-side inside your browser.
- Text Encryptor
Text Encryptor — Protect your private messages and sensitive data with secure password-based encryption. Encrypt to cipher text and decrypt it back inst...
- PGP Encrypt / Decrypt
Encrypt and decrypt messages with PGP right in your browser. Generate RSA 4096 key pairs. 100% client-side — keys never leave your device.
- BIP39 Mnemonic Generator
Generate BIP39 mnemonic seed phrases for cryptocurrency wallets. 12 or 24 words from the official BIP39 wordlist. Client-side only.
- RSA Key Generator
Generate RSA public and private key pairs in PEM format using the Web Crypto API. Choose key size and export format. Client-side only.
- OTP Generator (TOTP)
Generate TOTP one-time passwords from a secret key. Compatible with Google Authenticator, Authy, and other 2FA apps. Client-side.
- String Obfuscator
Obfuscate text using zero-width characters, homoglyph substitution, or combining marks. Includes deobfuscator. Free browser-based tool.