Free · Private · In-browser

Excel Editor

Open, edit, and export spreadsheets without uploading them anywhere. Supports .xlsx, .xls, and .csv formats.

Drop a spreadsheet

.xlsx, .xls, .csv

About this tool

Open, view, edit, and export .xlsx, .xls, and .csv spreadsheets entirely in your browser. Read cells, make changes, and save as CSV, XLSX, or HTML — with no upload.

Editing a spreadsheet traditionally means desktop Excel or Google Sheets. This editor lets you inspect and modify spreadsheet data locally in your browser, then export it in a few common formats. Because processing is client-side, your data stays private and works offline.

Why use it

Quick access to spreadsheet data anywhere, with the freedom to re-export to the format you need — no account required and no files leaving your machine.

How it works

Load an .xlsx, .xls, or .csv file.
Review the data and make your edits.
Export as CSV, XLSX, or HTML and download.

Frequently asked questions

Are my spreadsheets uploaded?

No. All parsing and export happens in your browser, keeping your data local.

Which file types are supported?

.xlsx, .xls, and .csv for import; CSV, XLSX, and HTML for export.

Does it work offline?

Yes — once the page loads, spreadsheet operations run locally without a server round-trip.

All processing on this page happens locally in your browser — your files are never uploaded to a server.