Migrate n11 to Shopify: Step-by-Step Product Catalog Guide

Moving an existing product catalog from a regional marketplace to your own independent storefront is one of the most critical steps when expanding an e-commerce business. If you sell on n11, one of Turkey’s largest online marketplaces, your product catalog contains months or years of listings, SKUs, option variants, and image links. Shopify handles catalog data differently than marketplace platforms, which means a direct copy-paste or raw file upload will inevitably fail.

To ensure your products transfer smoothly without losing variant relationships, pricing accuracy, or barcode data, follow this step-by-step checklist before importing your catalog into Shopify.

Free tooln11 → ShopifyConverts your n11 product export into the Shopify import template: columns are mapped, barcodes and variants stay intact. Free, no signup.Open the tool

How to export your full product catalog from n11

Before you start reformatting data, make sure you download the comprehensive export rather than a filtered report from the seller center.

1. Log into your n11 seller office dashboard.
2. Navigate to the Product Management (Ürün Yönetimi) section.
3. Request a full catalog export as an Excel (.xls or .xlsx) file.
4. Avoid applying active filters or pagination limits so that out-of-stock items, inactive variations, and multi-option attributes are included.
5. Save the original export file as a backup and do not edit it directly in spreadsheet editors that automatically strip text formatting.

Opening raw marketplace files in standard spreadsheet software often triggers automatic type conversion, which converts numeric barcodes into scientific notation or removes leading zeros. To understand why this happens, read our guide on Excel vs CSV: Best File Format for Product Uploads.

Match n11 catalog fields to Shopify CSV structure

Shopify uses a standardized CSV schema where each parent product and its individual variants are organized hierarchically using a unique identifier called the Handle. A multi-variant item (such as a t-shirt in three sizes and two colors) occupies multiple rows in the spreadsheet, all sharing the same Handle, title, and product description on the first row, while subsequent rows define variant-specific attributes.

n11 Field Name	Shopify CSV Header	Notes
Ürün Başlığı (Product Title)	Title	Appears on the first row of each product handle
Ürün Açıklaması (Description)	Body (HTML)	Accepts formatted HTML; keep tags intact
Stok Kodu (Seller Stock Code)	Variant SKU	Must be unique per variant row
Barkod (GTIN / EAN)	Variant Barcode	8, 12, 13, or 14 digits; treat strictly as text
Satış Fiyatı (Selling Price)	Variant Price	Decimal format with period separator (e.g., 199.90)
Stok Adedi (Stock Quantity)	Variant Inventory Qty	Integer value representing available units
Seçenek Adı / Değeri (Options)	Option1 Name, Option1 Value	Attributes like Size (Beden) or Color (Renk)
Görsel URL (Main & Extra Images)	Image Src	Each additional image requires a separate row

If you prefer to convert your files automatically without manually rebuilding columns in a spreadsheet, use the free n11 → Shopify conversion tool. It formats the table directly in your browser without uploading your catalog data to any external server.

Free tooln11 → ShopifyConverts your n11 product export into the Shopify import template: columns are mapped, barcodes and variants stay intact. Free, no signup.Open the tool

Fix common data formatting issues before uploading

Marketplace export files frequently use local conventions for numbers and characters. If you do not normalize these fields before importing to Shopify, you will encounter upload errors or incorrect live pricing.

Comma vs. period decimal separators

Many continental European and Turkish platforms format currency with a comma as the decimal separator (for example, 249,50). Shopify expects prices with a period separator and no currency symbols (for example, 249.50). If your source file contains thousands separators (such as 1.249,50), remove the thousands dot and replace the decimal comma with a period. Failing to do this can result in products being listed at a fraction of their intended price.

Preserve leading zeros in barcodes

Barcodes (EAN-13, UPC-A, GTIN) often begin with a zero. When a CSV is processed incorrectly, spreadsheet programs treat the column as numeric and truncate the leading zero, shrinking a 13-digit barcode into a 12-digit number. Shopify will reject invalid barcode lengths or fail to sync with Google Merchant Center and Amazon sales channels later. Ensure barcode columns remain formatted as raw text strings.

Keep SKUs and Barcodes distinct

In n11, sellers sometimes duplicate their custom internal stock code into the barcode field. In Shopify, Variant SKU is your internal tracking identifier, whereas Variant Barcode is reserved for standard commercial barcodes. Do not populate both columns with identical internal values if they are not legitimate UPC/EAN identifiers.

For more troubleshooting tips on schema mismatches, review our breakdown of 7 Common Product CSV Import Errors and How to Fix Them.

Map marketplace categories to Shopify collections

One common misunderstanding during marketplace migrations is category mapping. Marketplaces like n11 require sellers to select deep, predefined taxonomy paths (such as Home > Kitchen > Cookware > Frying Pans).

Shopify does not use hardcoded category trees. Instead, it relies on two distinct concepts:

• Product Type (Type): A general classification for the item (e.g., Cookware). Your conversion should map the main category text here.
• Collections: Curated groupings created inside Shopify. You can set up automated collections that group products based on conditions (such as Product Type equals Cookware or Tag contains non-stick).

Do not try to force a deep multi-level marketplace category path into a single Shopify field. Map the primary category to Type and use tags to handle subcategories.

Verify image URLs and HTML descriptions

Shopify imports product photos by downloading them from the URLs provided in the Image Src column during the CSV processing phase. For this process to succeed:

• Keep URLs publicly accessible: If image links point to the n11 media CDN, do not close or restrict your marketplace account until the Shopify import has fully completed and all images are hosted on Shopify’s servers.
• Handle multiple images per product: The first image URL sits on the main product row. Every additional image requires an extra row with the same Handle value, leaving the title, description, and variant-specific columns empty.
• Clean broken HTML tags: Marketplace product descriptions often contain custom inline CSS or unclosed <div> and <span> tags from copy-pasting. Preview a few complex descriptions to make sure unclosed tags do not distort your Shopify theme layout.

Run a small test import in Shopify

Never upload a 5,000-item CSV file on your first attempt. Extract a small batch of 5 to 10 products that represent all catalog types (simple items, single-option items, and multi-variant items with multiple images).

1. Go to Shopify Admin > Products > Import.
2. Upload your test CSV.
3. Check the import preview to confirm that titles, pricing, and variant counts match your expectations.
4. Click Import Products and inspect the newly created product pages.
5. Verify that variant dropdowns work as expected, image galleries load cleanly, and inventory levels are accurate.

Once the test batch imports without errors, you can safely process your entire catalog file.

More guides on this topic

This article is part of the E-commerce product files topic cluster. Other guides in the same cluster:

• How to Prepare a Product CSV File: Complete Guide — the pillar guide
• Excel vs CSV: Best File Format for Product Uploads
• Export Trendyol Products to Excel: Step-by-Step Guide

Frequently asked questions

Does importing a CSV from n11 transfer my customer reviews and sales history? No. A CSV migration transfers catalog metadata, such as titles, descriptions, SKUs, barcodes, variants, prices, and images. Historical sales metrics and marketplace reviews stay on n11 and cannot be imported via standard Shopify product CSVs.

How does Shopify handle taxes included in n11 product prices? Marketplace prices on n11 typically include VAT. In Shopify, whether prices include tax is determined by your global store tax settings under Settings > Taxes and duties. Ensure your Shopify store is configured to include taxes in product prices if you import gross retail figures directly.

What happens if two different products share the same Handle in the CSV? Shopify treats rows with identical handles as variants of the same single product. If distinct products accidentally share a handle, Shopify will merge them into one product listing with multiple option values. Ensure every unique product has its own distinct handle string.