How to use this office tool
- Select a compatible source file.
- Review the header or column setting and preview limit.
- Choose Update headers, inspect the bounded preview, and download the newly generated result.
#084 · CSV & Delimited Files Tool
CSV Header Editor
Rename CSV column headers in the browser while leaving the remaining records in their original order, then download a newly generated CSV.
Office File Tool
Local browser processingrow
rows
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What this tool does
Parses the CSV with delimiter detection, replaces the first row with the comma-separated names you enter, and safely serializes every row into a new CSV Blob.
Parses the CSV with delimiter detection, replaces the first row with the comma-separated names you enter, and safely serializes every row into a new CSV Blob.
Keep the original file until you have checked the downloaded result in your spreadsheet application.
Supported formats
Accepts CSV or TSV text input as described above and creates a new CSV or XLSX result.
| Format | Use |
|---|---|
| XLSX / XLS | Workbook data input where applicable |
| CSV / TSV / XML | Plain structured-data input where applicable |
| Output | A newly generated XLSX or CSV file |
Tips for better results
- Keep a backup before processing.
- Use a clear header row and consistent column types.
- Review IDs, dates, formulas, and leading zeros in the preview.
- For sensitive files, close the tab after downloading the result.
FAQ
How do I enter replacement CSV headers?
Type one name per column in the New headers field, separated by commas and in the desired order.
Can I add or remove CSV columns here?
No. The number of replacement names must match the existing number of columns.
Does changing headers reorder the data rows?
No. Only the first parsed row is replaced; subsequent records remain in the same order.
How are commas and quotes inside CSV values handled?
The exporter quotes fields when needed and doubles embedded quotation marks.
How does the editor reduce CSV formula injection risk?
With Protect text values enabled, exported values beginning with common formula markers are prefixed with an apostrophe.
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Processing summary
| Stage | Behavior |
|---|---|
| Read | Local browser memory |
| Transform | Parses the CSV with delimiter detection, replaces the first row with the comma-separated names you enter, and safely serializes every row into a new CSV Blob. |
| Export | New downloadable file |
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