Select or Remove Columns
Keep or remove selected columns to quickly trim a CSV down to the fields you need.
CSV to ExcelExcel to CSVCSV to JSONJSON to CSVMarkdown TableCSV DeduplicateRemove Empty RowsTransposeSort by ColumnSelect ColumnsSplit CSVMerge CSV
Upload Files
Upload one file. Processing stays in the browser.
Active input: -
Paste Input
Paste CSV, JSON, or Markdown table content directly.
Settings
Result Preview
Load data first and generate a result. The preview will appear here.
How to use
Load your CSV input.
Choose keep or remove mode, then tick the target columns.
Review the preview and download the trimmed CSV.
Best for
Share only the fields that matter with teammates or clients.
Drop irrelevant columns before sorting or deduping.
Use it for lightweight data minimization and field trimming.
FAQ
Can I keep multiple columns at once?
Yes. Multi-select is supported.
What is the difference between keep and remove mode?
Keep mode outputs the checked columns, while remove mode outputs everything else.
What if every column is removed?
The tool warns you and prevents exporting an empty table structure.