CSV Column Editor
Select, reorder, rename, and trim whitespace in CSV columns, then save back to CSV
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🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
Pick only the columns you need from your CSV data, reorder them, rename them, and trim leading, trailing, and duplicate whitespace from cells before saving back to CSV. You can quickly reshape your data's column structure right in the browser, without opening Excel.
How to use
- Paste your CSV and confirm the input delimiter and whether the first row is a header.
- Use each column's checkbox to include or exclude it, edit names, or reorder with ▲▼.
- If needed, adjust the output delimiter and the 'Trim whitespace' option.
- Check the preview, then export with 'Copy CSV' or 'Save CSV'.
FAQ
- Does it work with tab- or semicolon-separated files?
- Yes. You can set the input and output delimiters independently among comma, tab, semicolon, and pipe, so you can also use it just to re-save a file with a different delimiter.
- How are values that contain commas or line breaks handled?
- When a value contains a delimiter, quote, or line break, it's automatically wrapped in double quotes with inner quotes escaped, so it's saved safely in standard CSV format. The saved file includes a BOM for Excel compatibility.
- Is the CSV I upload sent to a server?
- No. Parsing, editing, and saving all happen entirely in your browser, and your data is never sent to or stored on a server.