Is my CSV data uploaded to a server?
No. The tool parses, transforms, previews, and exports data locally in your browser without uploading your input.
Data & Tables
CSV Editor
Edit CSV files online in a browser table. Update cells, rows, columns, delimiters, headers, and quoted values without uploading your data.
Tool
CSV Editor
Edit CSV files online in a browser table. Update cells, rows, columns, delimiters, headers, and quoted values without uploading your data.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this CSV Editor to make practical changes to CSV data in a table interface. Add or remove rows, rename columns, edit individual cells, choose the delimiter and quote style, and export a clean CSV result. It is designed for lightweight corrections and cleanup tasks where opening a full spreadsheet program would be more friction than help. Your table stays local to the browser while you work.
Examples
- sku,name,stock,price A-100,Notebook,42,7.95 A-101,Desk Lamp,18,24.50 A-102,Cable Pack,73,5.25
Frequently Asked Questions
Which CSV details are supported?
The parser handles configurable delimiters, quote characters, UTF-8 text, optional BOM detection, mixed line endings, headers, and line breaks inside quoted fields.
Can I add and delete columns?
Yes. The editor supports adding, deleting, renaming, and reordering columns before exporting the table back to CSV.
Will empty cells be preserved?
Yes. Empty cells should remain part of the table and be exported as empty CSV fields unless the user chooses a cleanup action.
What file sizes are practical in the browser?
Small and medium tables are the best fit. Very large files can use a lot of memory because parsing, previews, and exported results all live inside the browser tab.