About Sheets Studio
Sheets Studio — free, private, browser-based convert tool
A full spreadsheet in your browser — edit cells, write formulas (SUM, AVERAGE, IF…), and import/export XLSX & CSV. Nothing uploaded. It takes .XLSX, .XLS, .CSV, .TSV and gives you VND.OPENXMLFORMATS-OFFICEDOCUMENT.SPREADSHEETML.SHEET, CSV. It runs in your browser, so the file is processed on your own device.
Why use Sheets Studio
- ·Files stay on your device — nothing is uploaded
- ·No signup needed
- ·Works in any modern browser, on any OS
- ·Free daily use; Pro removes limits and watermarks
How to use it
- 1Drop a .XLSX, .XLS, .CSV, .TSV file on the page, or click to choose one.
- 2Pick the options you want.
- 3Download the VND.OPENXMLFORMATS-OFFICEDOCUMENT.SPREADSHEETML.SHEET, CSV file.
What Sheets Studio does
A full spreadsheet in your browser — edit cells, write formulas (SUM, AVERAGE, IF…), and import/export XLSX & CSV. Nothing uploaded. The result is a VND.OPENXMLFORMATS-OFFICEDOCUMENT.SPREADSHEETML.SHEET, CSV file you download directly.
How it works
ffmpeg.wasm + libvips-wasm + pdf-lib + sheetjs + mammoth, with a routing layer that picks the best engine per pair. The processing code runs inside the page, so your file is not uploaded to a server — you can confirm this in your browser's DevTools → Network tab.