Ucoin Helper

Ucoin Helper

Ucoin Helper is a lightweight browser extension that enhances the experience of using uCoin.net
— a popular platform for managing and browsing coin collections.

Originally created for personal use, this extension may also be helpful to other collectors who want faster navigation, easier catalog access, and more powerful filtering on uCoin.

⭐ Key Features
📋 Enhanced Table View

Adds catalog numbers directly to the coin list tables

Makes it easier to browse, sort, and manage your collection

🎯 Advanced Filtering for Exchange Lists

Adds multi-criteria and multi-value filtering

You can filter by several countries, years, or other fields simultaneously

Built on top of uCoin’s own filtering logic, just more intuitive

🧩 Seamless Native Integration

All enhancements are built directly into the existing uCoin interface

The extension only augments native functionality — nothing is replaced or overridden

🔐 Privacy and Security

Your privacy is fully respected:

✅ No data is collected, transmitted, or stored

✅ No access to your login credentials, cookies, or personal data

✅ All operations run locally in your browser

✅ Only affects pages under ucoin.net

Read the full privacy policy here:
🔗 https://github.com/dubilyer/Ucoin-Helper/blob/main/privacy.md

⚙️ Technical Details

Developed using Manifest V3

Modifies the DOM of uCoin pages to insert visual enhancements

Uses minimal permissions:

tabs

activeTab

scripting

storage

host_permissions for https://*.ucoin.net/*

Tested in modern Chrome-based browsers.

🧪 How to Use

Visit ucoin.net

The extension automatically enhances the interface:

Adds catalog numbers to tables

Enables improved filtering tools

Works only when relevant content is detected (no UI clutter)

📦 Installation (Developer Mode)

To try it locally:

Download or clone the repository from GitHub
🔗 https://github.com/dubilyer/Ucoin-Helper?tab=readme-ov-file

Open Chrome and navigate to chrome://extensions

Enable Developer Mode

Click "Load unpacked"

Select the folder containing the extension files

You’re ready to go!

💡 Open Source

This extension is fully open source and licensed under the MIT License

Explore the code, suggest improvements, or fork your own version:

🔗 GitHub Repository: https://github.com/dubilyer/Ucoin-Helper

📌 Disclaimer

This is a personal helper tool. It is not affiliated with or endorsed by uCoin.net.

Use at your own discretion.