CSV Viewer

CSV Viewer

Updated August 20, 2026

CSV viewer online. Open a CSV file as a table in your browser. View Excel CSV without uploading.

CSV

Features

  • CSV viewer online: open a CSV file as a table in your browser
  • View Excel CSV without installing Excel
  • Auto-detect comma, semicolon, tab, or pipe
  • Show the first 250 rows so a large paste stays fast
  • Row and column counts for the full file
  • Download the normalized CSV. Nothing is uploaded

Common Use Cases

  • Open a CSV online when you do not have Excel
  • Check whether a delimiter guess looks right
  • Skim an export before converting to JSON
  • See empty rows and ragged columns
  • Confirm quoting survived an email forward

Open a CSV file in your browser

A CSV viewer shows spreadsheet data as a table without Excel. Paste CSV or a Google Sheets export and scan columns. The whole paste is parsed in memory. The table only draws a cap of rows so the page stays cheap. Counts at the top include every row.

Examples

Valid - Normal table
a,b
1,2
3,4
Valid - Ragged row
a,b
1
2,3,4
Invalid - Broken quotes
a,b
"1,2

Frequently Asked Questions

Can I open a CSV file online without Excel?

Yes. This CSV viewer shows the file as a table in your browser. Nothing is uploaded.

Can I edit cells?

This is a viewer. Copy the CSV, edit in a sheet, paste again.

Why only 250 rows on screen?

Rendering tens of thousands of DOM cells is slow. The parse still includes every row for counts and download.

Related Tools

CSV Validator

List issues as a report

Try it

CSV to JSON

Export objects

Try it

Delimiter converter

Switch comma/tab/semicolon

Try it

Tips

  • If columns look shifted, the delimiter is probably wrong. Try the delimiter tool.
  • A leading sep=, line from Excel is not a standard header. Remove it.