1
Map columns visually
No code or formulas. Choose which source column should fill each output field, even when the header names differ.
THE SIMPLEST WAY TO REUSE A SPREADSHEET MAPPING
Transform a spreadsheet once. Repeat it in seconds.
Upload a CSV or Excel file, match its columns to the format you need, and save the mapping for next week. Free to try, no signup, and no file uploads to a server.
✓ No account required✓ Browser-local processing✓ CSV and Excel
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WHY RepeatKit
One simple engine for many recurring files
2
Catch errors before export
See missing fields, invalid prices, and duplicate Shopify URL handles before they become import problems.
3
Keep the recipe
Save your mapping locally. Next week, apply it to the new supplier file. Export recipe JSON for safekeeping.
COMMON QUESTIONS
Important things to know
Are files uploaded to RepeatKit servers?
No. The converter runs in your browser. This website may still generate ordinary hosting access logs, but uploaded file contents are not intentionally transmitted to a backend.
Can I convert an Excel .xlsx file?
Yes, the current browser version supports CSV, TSV and common XLSX worksheets. It reads the first sheet only. It does not run macros or calculate spreadsheet formulas. Complex formats may need a CSV export.
Can I update existing Shopify inventory?
No. The Shopify preset is strictly for creating NEW simple draft products, not stock levels, locations, existing products or variants. Shopify maintains a separate inventory CSV flow.
Where are saved mapping recipes stored?
They are stored in this browser's local storage. Clearing site data will erase them. Download a JSON backup from the mapping screen. Uploaded spreadsheets are not saved.
Is this ready for important production imports?
Always review the output and try a small import on a Shopify development store first. This independent utility cannot guarantee compatibility with every merchant-specific configuration.
MORE FILE CONVERSION TOOLS
Choose a conversion workflow
Excel to CSV converter
Read the first Excel worksheet and export clean CSV data.
CSV to Excel converter
Turn a CSV into a downloadable XLSX workbook.
CSV column renamer
Rename, reorder and remove columns.
CSV template mapper
Reuse a mapping for recurring files.
Need a different kind of file mapping?
Choose the universal mapper, or use our narrow Shopify new-product preset.