CSV to Excel Converter - XLS, XLSX, JSON, PDF

Convert CSV files to Excel (XLSX, XLS), JSON, PDF & more. Free offline converter that works in your browser - no data upload needed.

Convert CSV to XLS, XLSX, ODS, or HTML — Securely in Your Browser Looking for a fast, private way to convert CSV files? This Chrome extension helps you convert CSV to XLS, XLSX, ODS, and even HTML with zero server uploads. Whether you're a business user, student, or developer, this tool transforms your files instantly and offline — right inside your browser. ✅ Convert CSV to XLS (Legacy Excel) ✅ Convert CSV to XLSX (Modern Excel) ✅ Convert CSV to ODS (OpenDocument Spreadsheet) ✅ Convert CSV to HTML table Why Choose This Converter? 🔐 100% Private — No uploads, no tracking, no login 🚀 Offline & Fast — Works instantly in your browser after install 🧠 Smart UI — Drag and drop, clear feedback, file rename automation 🌍 Multilingual — 14 languages including RTL support for Arabic & Hebrew 🦾 Fully Accessible — Keyboard navigation & screen reader ready 💾 Lightweight — Minimal footprint, built with SheetJS & Manifest V3 Perfect for: Users who want to convert CSV to Excel (XLS or XLSX) without Excel Working with sensitive data without internet Chrome users on Windows, macOS, Linux — no OS limitations No file size limits (browser memory only), no signup, and full offline mode make it the best CSV to spreadsheet converter for your daily workflow.