How to Use the CSV Column Renamer Tool
✏️ Open the CSV Column Renamer and follow along with this tutorial.
Open Tool →Steps
Step 1: Upload Your CSV
Click Upload CSV. The tool parses the file and displays all detected header names in an editable list.
Step 2: Review the Header List
Each row shows the original header on the left and an editable field on the right. By default, the editable field is pre-filled with the current header name.
Step 3: Edit Header Names
Click into any field and type the new name. You can rename any number of headers. Column order and data rows are not affected.
Step 4: Preview the Output
Click Preview to confirm the headers and first rows look correct.
Step 5: Export the Renamed CSV
Click Export Renamed CSV. The browser downloads the file with updated headers and all original data rows preserved exactly.
Privacy reminder: All processing is local. Your file never leaves your browser.
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