CSV Column Selector
Data & CSV · Done in 3 steps
- 1Paste your CSV
- 2
- 3
About
Pick, reorder and rename CSV columns, then download only the columns you need as CSV or JSON.
How to use it
- 1Paste CSV or drop a file.
- 2Untick the columns you don’t need (or use All/None).
- 3Rename columns inline and move them up or down to reorder.
- 4Download the result as CSV or JSON.
- You give
- CSV/TSV text or file
- You get
- CSV or JSON with only the chosen columns, in your order
- Good to know
- Column changes reset when the input’s header row changes. Files up to roughly 50–100 MB work on a desktop browser (big files are streamed in chunks); phones may run out of memory sooner. The preview shows the first 200 rows, downloads include every row.
- Privacy
- Processed on your device. Nothing is uploaded, stored or logged.
- Last tested
- 2026-10-28
FAQ
Can I duplicate a column?
Not directly — each source column appears once. Download the result and re-add it, or use a spreadsheet for computed columns.
Does it work without a header row?
Yes. Untick “First row is the header” and columns are named Column 1, Column 2… which you can rename.
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