Shopify to BigCommerce Migration
Use Nventory's product sync engine to move your Shopify catalog to BigCommerce — products, variants, images, and pricing all transfer automatically. Keep both stores live with synced inventory while you validate BigCommerce, and cut over only when you're confident.
Migration Timeline
Estimated timeline for syncing your Shopify product catalog to BigCommerce using Nventory.
Migration with custom data or multiple integrations
Factors That Affect Timeline
- •Number of products and variants, including products split on Shopify that should consolidate on BigCommerce
- •Catalog size and metafield-to-custom-field mapping complexity
- •Product image count and total file size affecting transfer time to BigCommerce's CDN
- •Number of Shopify collections requiring BigCommerce category structure planning
What Moves to BigCommerce
Nventory moves your product catalog so you can start selling on BigCommerce without rebuilding from scratch. Here's exactly what transfers and what doesn't.
Nventory Handles This
- Products & Variants
Nventory converts Shopify products with variants to BigCommerce products with options and SKUs.
- Inventory Levels
Nventory syncs Shopify inventory levels per location to BigCommerce inventory.
- Collections to Categories
Nventory converts Shopify collections (both manual and smart) to BigCommerce categories.
- Product Images
Nventory transfers product images from Shopify's CDN to BigCommerce.
- Product Pricing
Nventory maps Shopify regular prices and compare-at prices to BigCommerce's price and sale price fields.
You'll Handle Separately
- Customer accounts and data
Customer databases, saved addresses, and login credentials cannot be transferred between platforms through Nventory
- Order history
Historical orders and transaction records from the source platform cannot be migrated to the destination platform
- Shopify app data and third-party integrations
Data stored within Shopify apps (loyalty programs, subscription billing, custom forms) lives in each app's infrastructure on Shopify. This data cannot be accessed through Shopify's standard API and must be exported from each app individually for import into BigCommerce equivalents.
- Shopify Payments and Shop Pay data
Shopify Payments transaction data, saved customer payment methods, and Shop Pay express checkout data are proprietary to Shopify's ecosystem. Payment credentials cannot be transferred — customers will need to re-enter payment details on BigCommerce with the new payment gateway.
- Shopify Online Store 2.0 theme sections and templates
Shopify's Liquid theme system with JSON templates, sections, and blocks does not transfer to BigCommerce's Stencil theme engine. All storefront customizations, custom sections, and theme modifications must be rebuilt in Stencil or BigCommerce's page builder.
Powered by Nventory's product sync engine: The same reliable sync that keeps multichannel sellers in stock across platforms also powers your migration. Your Shopify catalog syncs to BigCommerce and stays in sync — run both stores in parallel until you're ready to switch.
Things to Consider
Platform-specific details and how they affect this integration.
Merchants who split products on Shopify to work around the 100-variant or three-option-axis limit can consolidate them into single products on BigCommerce (which supports 600 variants). This restructuring improves catalog management but requires careful planning for product data accuracy.
Nventory identifies Shopify products that were split due to variant limits (detected through naming patterns, tags, or metafield linkages) and proposes consolidation plans for BigCommerce. The plan is reviewed before sync execution.
Who Should Migrate from Shopify to BigCommerce
Common scenarios where a Shopify to BigCommerce migration makes sense.
Migration Process
A structured, step-by-step migration through Nventory.
Shopify → Nventory → BigCommerce
Connect Both Platforms
Connect your Shopify store and your new BigCommerce store to Nventory. Nventory reads your Shopify product catalog, metafields, collections, and inventory data to prepare for sync.
Sync Your Product Catalog
Nventory syncs your complete product catalog from Shopify to BigCommerce — variants convert to product options, collections map to categories, metafields become custom fields, and images transfer to BigCommerce's CDN.
Enable Inventory Sync
Nventory enables real-time inventory sync between Shopify and BigCommerce. Stock levels stay consistent across both stores so you can sell on either platform without overselling.
Sell on Both, Switch When Ready
Run both stores in parallel with Nventory keeping inventory synced. Validate BigCommerce checkout, shipping rules, and product data. Cut over to BigCommerce when you're confident — on your timeline.
Frequently Asked Questions
BigCommerce supports up to 600 variants per product. Nventory migrates all Shopify variants directly and can consolidate any products that were split on Shopify due to the variant limit back into single products on BigCommerce.
Shopify apps do not work on BigCommerce, but BigCommerce has its own app marketplace with equivalent tools. Nventory provides a compatibility report mapping each of your Shopify apps to a BigCommerce alternative.
Yes. Nventory's dual-store sync lets you run Shopify and BigCommerce simultaneously for as long as you need. Many merchants run both for several weeks to test BigCommerce performance before making a final decision.
BigCommerce uses a different theming system with Stencil and its own page builder. While Online Store 2.0 sections and templates do not transfer, BigCommerce's theme engine provides equivalent customization capabilities with drag-and-drop page building.
The initial product catalog sync from Shopify to BigCommerce typically completes within 2-12 hours depending on catalog size and image count. Nventory keeps both stores live with synced inventory during the entire transition, so there is zero downtime — you keep selling on Shopify until BigCommerce is validated, and switch your domain only when ready.
Nventory transfers products, variants, metafields, images, pricing, collections, and inventory. Customer accounts, order history, Shopify app data (loyalty programs, subscriptions, reviews), Shopify Payments saved cards, Shop Pay data, Flow automations, and Liquid theme customizations don't transfer — these need BigCommerce equivalents configured separately.
Shopify metafields are converted to BigCommerce custom fields during migration, but the two systems handle data types differently. Check Nventory's field mapping report for metafields that failed conversion — common issues include JSON-type metafields that exceed BigCommerce's 255-character custom field limit and file reference metafields that need to be re-uploaded. Metafields using Shopify-specific types like rich_text_field or rating may need manual formatting adjustments after migration.
Move Your Products to BigCommerce
Use Nventory's reliable product sync to move your Shopify catalog to BigCommerce. Run both stores with synced inventory until you're ready to switch.
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