Instant Sales Data Visualization Dashboard

I have a spreadsheet-driven project that needs to feel as quick and lightweight as a native app. As soon as a user drops an .xlsx or .csv file into the page, I want three visuals to appear: • A clean [login to view URL] line chart tracking our sales data over time • A complementary [login to view URL] pie chart breaking those sales down by category • A heatmap that helps spot spikes or lulls at a glance Hovering over any point or cell should reveal concise summary statistics—think totals, averages, highs and lows—without forcing the user to click, filter, or zoom. Smooth hover feedback is all the interactivity required for version 1. What I care about most is clarity and speed: the dashboard must look crisp on modern desktop and tablet browsers, load quickly, and run from any simple static or Node-based server. Whether you prefer vanilla JavaScript or React, pick the approach that keeps the bundle small and the codebase easy to read; [login to view URL] is the agreed-upon library for the charts, and you’re free to choose a compatible tool for the heatmap. Deliverables • Fully working, well-commented source code • A short README with step-by-step deployment instructions (dependencies, build or run commands, and hosting tips) If you enjoy crafting snappy front-end data views and can hand off a clean, minimal solution, I’d love to see your proposal—please outline your tech choice (vanilla vs. React) and any performance tricks you’ll use to keep the interface lightweight.

Project ID: 40579864