Free Online CSV Editor

Edit CSV tables online. Add, remove, rename, and update rows and columns.

Drop your CSV file here

or click to browse from your computer

CSV, TSV, XLSX, TXT• Private in-browser processing

Private by Design — Your CSV Stays on Your Device

OnlineCSV processes your files entirely client-side using browser JavaScript. Your CSV contents are never uploaded to any server, database, or remote service.

No account requiredWorks offlineZero data transmission

How to Use CSV Editor

Open CSV File

Drop your CSV file or start with an empty table layout.

Edit Cells & Structure

Double click cells to edit text, add rows or columns, and reorder structure.

Download Edited CSV

Click Download CSV to save your modified file instantly.

Example Transformation

Example CSV Input

id,product,price
1,Laptop,999
2,Mouse,25

Frequently Asked Questions

Does editing support keyboard shortcuts?

Yes. Standard editing keyboard shortcuts like Undo (Ctrl+Z / Cmd+Z) are supported.

Are my changes saved on a server?

No, changes are stored only in temporary browser memory while the tab is open.

Related CSV Tools

CSV Viewer

Open, view, search, and inspect CSV files online directly in your browser.

Find and Replace CSV

Search for text patterns and replace values across all or selected columns.

Select CSV Columns

Extract, reorder, or delete specific columns from CSV files.

Sort CSV

Sort CSV rows alphabetically, numerically, or by date by any column.