Years ago, while working on a PHP project, I stumbled upon a brilliant little gem called PseudoCrypt by KevBurnsJr. It gave me compact, reversible hashes for integer IDs — just what I needed for pretty URLs.

Fast-forward to today, while building a Node + Express app, I wanted that same functionality. Nostalgia kicked in — so I re-imagined the logic in JavaScript, packed it into a clean NPM module, and now, I'm sharing it with the world.

📦 Installation

To install PseudoCrypt via npm and use it in your Node.js projects:

npm i @cttricks/pseudocrypt

If you're building a front-end application or prefer to load PseudoCrypt directly in the browser, you can include it from the jsdelivr cdn.

<script src="https://cdn.jsdelivr.net/gh/cttricks/[email protected]/dist/pseudocrypt.min.js"></script>

⚙️ Usage

const { encode, decode } = require('@cttricks/pseudocrypt');

const shortId = encode(1320588); // HdMxQ
const original = decode(shortId); // 1320588

[!TIP] You can also customize the hash length

const hash = encode(123456, 7);  

📚 API

encode(number, length = 5)

• Converts a number into a short, base62-like string.
• Length determines the padded size of the output hash.

decode(string)

• Reverses the encoded string back to the original number.

🧠 Use Cases

• URL shortening
• Obfuscating numeric IDs
• Pretty URLs
• Generating lightweight client-side keys

[!WARNING]
This is not a cryptographic hash — it’s meant for short pseudo-unique strings, not for passwords or secure encoding.

This little library was built with a blend of nostalgia, practicality, and a sprinkle of fun. If it saved you a few lines of code or gave your project some cleaner URLs — I’m glad it helped ✨

Feel free to fork it, remix it, improve it, or just drop a ⭐ on GitHub if you found it useful. No formalities, no promises — just code made with good vibes.

—

Happy hashing! 🚀 — Tanish Raj / @cttricks