Free CSV Editor & Viewer — Edit Spreadsheets Online | BriskTool

Frequently Asked Questions

What file formats can I open?▼

You can open CSV (comma-separated), TSV (tab-separated), and semicolon-delimited files. The tool auto-detects the delimiter.

Is my data uploaded anywhere?▼

No. All processing happens locally in your browser. Your data never leaves your device.

How many rows can the editor handle?▼

The editor works best with up to 1,000 rows. For larger files, consider using a dedicated spreadsheet application.

Can I export to JSON?▼

Yes. You can download your data as CSV, TSV, or JSON. JSON output uses the first row as keys for each record.

How to Use CSV Editor & Viewer

1Open the CSV Editor & Viewer tool above - it loads instantly in your browser.
2Enter your data or upload your file. Everything is processed locally on your device - nothing is uploaded to any server.
3Get your results instantly. Copy, download, or share - completely free with no signup required.

CSV Editor & Viewer is part of BriskTool's collection of free online tools. All processing runs entirely in your browser for maximum privacy and speed.