About CSV Preview

CSV Preview is a lightweight, browser-based CSV viewer and editor. Open a spreadsheet in one or two clicks and explore it instantly — without uploading your data to any server.

What you can do

• Open a .csv file from your computer, or drag and drop one onto the upload dialog.
• Paste CSV content straight from your clipboard, or start from a blank sheet.
• Toggle the first row as a header so it stays pinned while you scroll.
• Sort any column ascending or descending with one click.
• Filter rows by selecting values from a column, searching, or comparing numbers.
• Pick up where you left off — your current sheet is kept locally in your browser.

Privacy by default

Your data never leaves your browser. There are no accounts, no uploads, and no servers parsing your files. Everything happens on your device, and you can clear it any time.