● 100% local file processing

Check your Walmart WFS spreadsheet before you upload it.

Catch common WFS Full Setup and Convert-to-WFS spreadsheets problems locally in your browser. No account. Your file stays on your device.

Independent preflight checks. Walmart Seller Center remains the final authority.
01Upload

Select an .xlsx workbook locally.

02Scan

Run deterministic checks in-browser.

03Fix

Review exact sheets, rows, and columns.

04Upload to Walmart

Submit through the official workflow.

Local workbook analysis

Choose a check

100% local file processing
Runs locally in your browserYour workbook is not uploadedIndependent tool — Walmart remains the final authority

Check one completed spreadsheet

Best for a fast review when you do not have the untouched original template.

Completed spreadsheet

Drop completed XLSX hereor choose a file from your deviceProcessed locally in your browser
.xlsx only · no account · no upload
Supported scope

Currently optimized for

Other Walmart spreadsheets may receive generic safety checks, but are not represented as fully supported.

Clear boundaries

Useful checks.
No false promises.

We validate spreadsheet structure, identifiers, required template fields, numeric values, dates, URLs, placeholders, and cross-sheet consistency where the workbook provides enough context.

A valid GTIN check digit does not prove ownership or product association. Passing preflight does not guarantee Walmart acceptance.

URL syntax is checked locally. Public accessibility and image or document content type are not tested.