Universal E-Commerce Listing Engine

One Master Excel.
Multiple Marketplaces.

Fill product data ONCE into our standardized Master Excel spreadsheet. Automatically transform, validate, and export compliant bulk listing files for Amazon, Flipkart, and Walmart.

Convert Excel Now Download Master Template
100%
Macro Preservation
3 Marketplaces
Supported Portals
< 5 Secs
Conversion Time
0 Errors
Pre-Upload Validation
Live Excel Transformation Visualizer
Input: Master Product Template (MASTER_PRODUCT_TEMPLATE.xlsx)
Master SKU
PHONE-XL-256G
Title
Ultra Smart Phone 256GB Black
GTIN / EAN
8901234567890
Price
699.00
Stock
50
Category
Cellular Phones
Auto-Mapped & Transformed

How It Works

A streamlined 6-step workflow to manage all your marketplace listings.

01

Download Master Template

Get our standardized Master Excel workbook pre-loaded with validation hints and dropdown values.

02

Fill Data Once

Enter your SKUs, titles, descriptions, pricing, inventory, GTINs, and image URLs in one place.

03

Upload Excel File

Drag and drop your completed Master Excel file into our web app converter engine.

04

Select Marketplaces

Choose Amazon, Flipkart, Walmart, or select all target marketplaces with a single checkbox.

05

Auto Validate & Map

Our engine verifies compliance against marketplace rules and transforms values automatically.

06

Download Ready Files

Download individual `.xlsx` / `.xlsm` listing files or get everything in a packaged `.zip` archive.

Supported Marketplaces

Preserving original template structures, macro streams, dropdown lookups, and version tags.

Amazon

.xlsm / .xlsx

Preserves Amazon's official 7-row header hierarchy, technical keys (`contribution_sku`), hidden dropdown lists, and category attribute columns.

  • 7-Row Header Schema Preserved
  • `contribution_sku` Key Mapping
  • Category Attribute Mappings

Flipkart

.xlsm

Preserves `mobile_phone_lens`, `Parent Variant Products`, hidden GST tax lookup sheets, country dropdowns, and version tag `TEMPHQ1K7AFJ`.

  • Binary VBA Macro Stream Retained
  • `TEMPHQ1K7AFJ` Version Tag Intact
  • Hidden GST & Dropdown Sheets

Walmart

.xlsx

Populates Walmart EL file import structure with accurate GTINs, formatted Product Names, Short Descriptions, and Long Descriptions.

  • Walmart EL Import Compliant
  • GTIN-14 Validation Engine
  • Short & Long Description Formatting

Engineered for Sellers

High-performance features designed for speed, accuracy, and listing compliance.

Single Master Source

Stop updating multiple spreadsheets per marketplace. Manage all product specifications in one Master file.

Automatic Field Mapping

Intelligently maps SKU, GTIN, titles, pricing, stock, dimensions, and image links to exact portal columns.

Pre-Upload Validation

Catches invalid GTIN formats, duplicate SKUs, out-of-range pricing, and missing mandatory values instantly.

Excel Diagnostic Reports

Generates downloadable Excel error reports pinpointing exact row numbers, invalid fields, and recommended fixes.

ZIP Batch Download

Export generated files for Amazon, Flipkart, and Walmart in a single packaged `.zip` archive with one click.

Secure File Cleanup

Uploaded workbooks and generated outputs are automatically purged from the server to protect catalog privacy.

Frequently Asked Questions

No. You maintain only ONE Master Excel file (`MASTER_PRODUCT_TEMPLATE.xlsx`). The application automatically reads, maps, and transforms your data into Amazon, Flipkart, and Walmart listing formats.

Our engine uses template preservation via PhpSpreadsheet. We load the official Flipkart `.xlsm` file, populate target data rows while preserving binary VBA macro streams, hidden lookup sheets (`DropDownValuesForColumn25`, `DropDownValuesForColumn29`), version metadata tag (`TEMPHQ1K7AFJ`), and formatting.

No API login is required. The application generates portal-ready bulk upload files (`.xlsx` and `.xlsm`). You download these files and upload them directly into Amazon Seller Central, Flipkart Seller Hub, or Walmart Seller Center.

Yes. You can select any combination of Amazon, Flipkart, and Walmart, run validation across all of them simultaneously, and download all generated files in a single packaged `.zip` file.

Ready to Automate Your Marketplace Listings?

Download the Master Template, fill in your product details once, and generate marketplace-ready upload files in seconds.

Launch Converter App Download Master Excel