A clearer handoff, before you import
Make sense of your
next catalog file.
Map supplier columns, compare a catalog export, and leave with a prepared CSV and a record of exactly what changed.
Your files stay in this browser. No account, upload, AI call, or payment.
Supported UTF-8 CSV, TSV, or semicolon-separated files. Up to 2 MiB per file, 2,000 data rows, 64 columns, and 60,000 cells. This is a file comparison—not a live-store import simulation.
Choose a supplier file, or try the synthetic example.
Bring the files
Nothing is sent to a server. Clear local work to release the files and worker.
No file selected
No baseline: structural preparation only
What this first version supports
Each row needs an explicit product handle and title. Variant fields need their option columns. Image-only continuation rows, unknown identities, locale conversions, and automatic deduplication are not supported. All source columns must map one-to-one; none are silently dropped. Baseline columns must already use supported Shopify headings.
Only originals preserve exact file bytes. Prepared CSV uses normalized line endings and quoting; data-cell values are not otherwise edited. Review publication defaults and blank fields before using any file in a store.
Confirm the meaning of each column
Known headings are suggested. You decide what every supplier column represents.
| Supplier heading | Example value | Use as |
|---|
Review before taking the file
Confirmed header changes
| Finding | Input / baseline row | Field | Before | After |
|---|
Rows are logical CSV records; the header is row 1. Missing rows are not deletion instructions. Prices are compared as text, without arithmetic or currency conversion. Full differences are included in the downloaded review.