1. Connectors
2. Zettle Inventory Quantities

SyncPenguin's connector for Zettle inventory quantities

Sync your Zettle inventory quantities two-way or one-way with other apps and services

Start free trial Talk to an expert

Free 14-day trial with full support and no credit card

Businesses that sell in a physical shop with Zettle and also sell online often end up with stock counts that don't match. Updating quantities by hand after every sale is slow and error-prone, and it leads to overselling, disappointed customers, and missed sales. This connector removes that manual work by keeping Zettle inventory levels in sync with your other sales channels automatically.

How does it work?

The Zettle Inventory Quantities connector keeps your Zettle by PayPal stock levels in sync with your online store and other sales channels. SyncPenguin matches products by SKU or barcode and transfers every stock change, whether from a sale at the counter or an online order, so each system always shows the right quantity. Connect your Zettle account, choose the store inventory to sync, and SyncPenguin handles the rest automatically.

What can Zettle inventory quantities be synced with?

BigCommerce

Inventory quantities

Shopify

Inventory quantities

Square

Inventory quantities

Squarespace

Inventory quantities

WooCommerce

Inventory quantities

Xero

Inventory quantities

Zettle

Inventory quantities

Popular real-world use cases

• 
  Keep Zettle in-store stock and Shopify online store inventory in sync two-way, so a sale in either channel updates the other.

  
• 
  Sync inventory levels between Zettle and Square POS when you run different point-of-sale systems at different locations or events.

  
• 
  Connect Zettle with your WooCommerce shop so online orders reduce stock available at the counter, and in-store sales reduce stock online.

  
• 
  Keep your Squarespace store and Zettle POS showing the same stock levels to avoid overselling handmade or limited-run items.

  
• 
  Sync quantities between Zettle and BigCommerce to keep a single, accurate stock count across physical and online sales.

  
• 
  Keep Xero inventory quantities aligned with Zettle sales so your accounting stock levels always reflect what was sold in store.

  
• 
  Run a many-to-one setup where Zettle, Shopify, and WooCommerce all share one stock pool, with every sale updating all channels.

  

  
• 
  Sync inventory between two Zettle accounts or store inventories, for example a main shop and a pop-up or market stall.
• 
  Use barcode matching to sync Zettle stock with Shopify when your products share barcodes but have different SKUs in each system.

  

Key features

Near Real-Time Updates

Zettle notifies SyncPenguin as soon as stock or products change, so updates reach your other channels quickly.

SKU or Barcode Matching

Match products across systems by SKU or by barcode, depending on how your catalog is organized.

Adjustment-Based Sync

SyncPenguin transfers stock changes rather than overwriting totals, so simultaneous sales in different channels are all counted.

Product Filtering

Choose exactly which SKUs or barcodes to sync and leave the rest of your catalog untouched.

Store Inventory Selection

Pick the Zettle store inventory you want to keep in sync with your other sales channels.

Affordable & Scalable

With SyncPenguin you only pay for actual changes to your inventory quantities, regardless of how many products you initially have, or will have in the future.

Things to note

• The connector syncs stock quantities only. Products must already exist in Zettle with a matching SKU or barcode, and new products are not created automatically.
• Product details such as names, prices, and descriptions are not synced, which keeps each channel's catalog setup under your control.
• Products need inventory tracking enabled in Zettle and a SKU or barcode assigned in order to be synced.
• Each SKU or barcode should be unique in Zettle. Items with duplicate identifiers are skipped to prevent stock from being applied to the wrong product.
• Each connected account syncs one Zettle store inventory at a time. To sync additional inventories, you can add more connections.

PRIVACY FOCUSED

We value your privacy

At SyncPenguin, we respect and protect the data we sync

Learn more

Frequently Asked Questions

Can I sync Zettle inventory with Shopify or WooCommerce?

Yes. SyncPenguin can sync Zettle stock levels with Shopify, WooCommerce, Square, Squarespace, BigCommerce, and Xero, either one-way or two-way, so in-store and online sales stay in sync.

How does SyncPenguin match products between Zettle and my other store?

Products are matched by SKU by default. You can choose to match by barcode instead, which is useful if your SKUs differ between systems but your barcodes are the same.

How quickly are stock changes synced?

SyncPenguin subscribes to Zettle notifications for stock and product changes, so syncing starts shortly after a change happens. Regular background syncs also run to make sure nothing is missed.

Will SyncPenguin create or delete products in Zettle?

No. The connector only updates stock quantities for products that already exist in Zettle with a matching SKU or barcode. Your product catalog stays exactly as you set it up.

Can I sync only some of my products?

Yes. You can set a list of SKUs or barcodes to sync, and all other products will be left untouched.

What happens if items sell in two channels at the same time?

SyncPenguin syncs stock adjustments rather than overwriting totals, so every sale is counted correctly even when they happen at the same time in different channels.

Do I need technical skills to set up the sync?

No. You connect your Zettle account securely, select your store inventory, and choose which channel to sync with from the SyncPenguin dashboard. No coding is required.

Start free trial Talk to an expert

Free 14-day trial with full support and no credit card

About Zettle

Zettle by PayPal, formerly iZettle, is a point-of-sale solution for small and growing businesses. It offers card readers, a POS app, and tools for managing products, sales, and inventory. Founded in Sweden and acquired by PayPal in 2018, Zettle is used by retailers, cafés, and market sellers across Europe and other regions.

Official website: https://www.zettle.com/