Crypto Portfolio Tracker

Crypto Portfolio Tracker is a lightweight, secure Chrome extension that helps you monitor your cryptocurrency holdings in real time. Built with Manifest V3, it connects to Binance US API to deliver accurate prices, auto-calculate your portfolio value, and visualize price trends—all data stays local on your device for maximum privacy. Key Features Real-Time Price Tracking – Get live cryptocurrency prices from Binance US API with efficient batch requests to minimize API calls. Complete Portfolio Management – Automatically compute total value, cost basis, profit/loss amount, and profit/loss percentage for each asset. Flexible Asset Control – Sort holdings by various metrics, remove positions easily, and keep data persistent with local Chrome storage. Detailed Price Charts – View interactive price charts powered by Chart.js, supporting 1-month, 3-month, and 1-year time ranges. 24h Market Statistics – Display current price, 24h change, 24h high and low for quick market overview. Transaction History – Show simulated trade records from the last 30 days. Clean Visual Identity – Each cryptocurrency displays a unique colored circular icon with its first letter clearly visible. Fullscreen & Responsive UI – Open in a new tab with fullscreen support and responsive layout for all screen sizes. CSV Import & Export – Backup or restore your portfolio easily with CSV file import and export. Auto-Refresh Toggle – Optional auto-refresh mode to keep prices updated (disabled by default). Loading States & Error Handling – Smooth loading animations and graceful fallbacks when API requests fail. Privacy First – All portfolio data is stored locally; no private keys, no data uploaded to external servers. Why Use This Extension? Ideal for crypto investors and traders who want a fast, simple, and reliable way to track their portfolio without logging into exchanges repeatedly. The extension uses modular design for stability and performance, with robust error handling to ensure a smooth experience even under unstable network conditions. Stay informed about your portfolio performance anytime, anywhere.