Local CSV · JSON · TSV tool

Messy data in.
Useful rows out.

See blanks, duplicates, and field completeness instantly—then search, sort, clean, or convert CSV, TSV, and JSON. Data stays in your browser.

No uploadsLive quality profileExport the current view

Data workspace

Paste data or choose a local CSV, TSV, or JSON file.

0Data rows
0Columns
0Blank cells
CSVCurrent format
0Bytes
Click a column header to sort
Source data
Data preview
Data preview, up to 50 rows, currently 0 columns
Valid data will appear here.

Sensitive tables never need to leave your device.

CSV, TSV, and JSON

Auto-detect common delimiters or choose comma, tab, semicolon, or pipe.

Search and sort

Search across fields and click any header to sort ascending or descending.

Quick cleanup

Deduplicate rows, format or minify JSON, then copy or download.