CSV or TSV data files
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CSV Column Renamer
Rename CSV or TSV headers while preserving every data row and quoted cell.
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No uploadsYour files stay on this device.
Local engineYour browser does the work.
Auto cleanupTemporary memory is released.
About this tool
Use csv column renamer without uploading files
Rename CSV or TSV headers while preserving every data row and quoted cell. CSV Column Renamer runs in the current browser session, giving you a direct result without sending the source to a Filemazing processing server.
Processing takes place in your browser tab. Temporary working data is released when you leave or reload the page.
Three steps
- Choose or paste the structured input for CSV Column Renamer.
- Select the columns, keys, order, or transformation rules to apply.
- Review a sample of the transformed result before downloading it.
Useful for
Common rename csv columns tasks
- Using rename csv columns without an upload queue
- Cleaning private exports
- Preparing structured data imports
Practical details
What to know before you start
A transformed data file from CSV Column Renamer
- Keep an untouched source export so transformed rows can be audited.
- Inspect identifiers, dates, delimiters, and blank values before importing the result.
- Review the CSV Column Renamer result before using it in an important workflow.