15 / Data

Large CSV Viewer & Cleaner

Open a large CSV or TSV, search rows, remove empty data and duplicates, drop columns, and export a clean copy.

The file is streamed and cleaned in this tab. No row is uploaded or stored.0 uploads · local

Drop a CSV or TSV
Up to 120 MB or 750,000 rows
UTF-8 files work best

Delimiter

Preview rows

Search every column

Drop one column

Select a file to inspect it locally.

Local data bench

Open the file. Keep the rows private.

The preview caps rendered rows so a wide file stays usable. Cleaning and export still apply to the full loaded file.

Field note

Inspect and clean a CSV without uploading it

The parser reads the file as a stream, understands quoted commas and line breaks, and renders only a preview. The complete loaded dataset remains available for cleaning and export.

Remove common spreadsheet mess

Trim leading and trailing spaces, remove blank rows or columns, and deduplicate complete records. Keep “First row is a header” on so a matching header is never removed as a duplicate.

Convert CSV and TSV

Open comma-, tab-, semicolon-, or pipe-delimited text. Export a standard CSV or tab-separated copy for a spreadsheet, database import, or another local tool.

Large-file limits

This browser tool accepts up to 120 MB or 750,000 rows to avoid exhausting a phone or laptop tab. It expects UTF-8 text. Very large database exports are better handled by a desktop database client.