cryptography

Hash Generator — Hash any text with MD5, SHA-1, SHA-256, SHA-384, or SHA-512 — all client-side via Web Crypto.

ROT13 / Caesar Cipher — Apply a Caesar shift to text. ROT13 is the famous self-inverse version. Useful for puzzles, spoilers, light obfuscation.

Bcrypt Generator — Generate bcrypt password hashes with a configurable cost factor. Enter a password and get a secure bcrypt hash instantly.

Text Encryptor — Protect your private messages and sensitive data with secure password-based encryption. Encrypt to cipher text and decrypt it back inst...

Hashtag Generator — Paste your content or enter keywords to generate relevant hashtags for social media. Supports Instagram, Twitter, TikTok, and other ...

Box Shadow Generator — Build CSS box-shadow visually — tune offset, blur, spread, color, opacity, and inset with live preview.

JSON to Go Struct — Paste a JSON sample and get matching Go struct definitions — with optional <code>json:"..."</code> tags, <code>omitempty</code>, and...

Open Graph Image Generator — Generate 1200×630 Open Graph cards, Twitter / LinkedIn social images, square Instagram-style images, or 9:16 story cards. D...