A modern Next.js tool to upload CSV files, preview, select columns, sort, and export them into Excel (.xlsx) format.
Supports drag & drop, lazy-loaded table rendering, column filters, and timestamped XLSX exports.

• 📂 Drag & Drop or Click to upload .csv files
• 🔍 Select specific columns before exporting
• ↕️ Sort data by clicking headers
• ⚡ Lazy-loading (virtualized list for large CSVs)
• 📥 Export to .xlsx with compression enabled
• 🕒 Auto-generated filenames with timestamps (e.g. export_2025-08-19_09-15.xlsx)

• Next.js (React framework)
• Papaparse → Parse CSV files
• SheetJS (XLSX) → Export XLSX
• react-window → Virtualized rendering for large datasets
• TailwindCSS + modern UI styling

Clone the repo and install dependencies:

git clone https://github.com/yourusername/csv-to-xlsx-exporter.git
cd csv-to-xlsx-exporter
npm install