Shopify box packing that pays for itself on every order.
Your store ships orders in boxes that are too big - or in too many boxes. Smarter packing cut carrier spend 37% in our published benchmark, about $11.31 per order at Ground list rates.
Why box size optimization matters for your store
Fewer boxes per order
Multi-item orders get consolidated into fewer cartons instead of shipping in two or three. In our benchmark that meant 44% fewer parcels - fewer labels, fewer pickups, less to pay for.
Stop paying dimensional weight for air
Carriers bill you for whichever is bigger: the actual weight or the box's dimensional weight. An oversized box means you're paying to ship empty space. Right-sized boxes cut the billable weight.
Know your box lineup
See which of your carton sizes actually earn their spot on the shelf - and which ones almost never get picked - so you can stock the sizes that save you money.
Paste a typical order - see what smarter packing saves.
Enter the items from one of your everyday orders and the boxes you stock. You'll see how many parcels you'd save and the estimated FedEx/UPS Ground cost difference - no signup, no code.
Your order
| Item | L | W | H | lb | Qty | |
|---|---|---|---|---|---|---|
Audited against a standard 7-box corrugated line-up using a first-fit baseline vs. cartonpilot-ultra.
Add your items and run the audit to see how many parcels and how much box spend CartonPilot can cut.
A CartonPilot Shopify app is in development.
We're building a Shopify app so your store can get smarter box packing without any custom work. Join the waitlist and we'll let you know the moment it's ready.
Until then, the CartonPilot REST API works with any stack today - your agency or developer can wire it into your store's fulfillment flow now and start saving before the app ships.
Shopify box packing FAQ
Does CartonPilot have a Shopify app?
A CartonPilot Shopify app is in development - you can join the waitlist at /shopify-app to be first in line when it launches. In the meantime, the CartonPilot API is available today, and an agency or developer can connect it to your store's fulfillment flow.
How much can a Shopify store save with box packing?
In our published, reproducible benchmark, smarter packing shipped 44% fewer parcels and cut carrier spend by 37% at published FedEx/UPS Ground list rates - about $11.31 saved per order. Your numbers depend on your products and boxes, so run the free audit on this page to see what a typical order of yours would save.
Do I need a developer to use this?
To connect the API to your store, yes - a developer or your agency can wire it into your fulfillment flow. But the free packing audit on this page needs no signup and no code: paste a typical order and see the savings right away.
Does it work with the boxes I already stock?
Yes. You tell CartonPilot which carton sizes you keep on the shelf, and it only ever picks from those. It won't recommend boxes you don't have - it finds the cheapest way to pack every order with your existing lineup.
How is this different from rate shopping?
Rate shopping picks the cheapest carrier for a package you've already boxed. CartonPilot picks the package itself - fewer and smaller boxes per order - before you ever rate-shop. The two work together: better boxes first, then the best rate for them.
Ready to stop shipping air?
Get on the list for the Shopify app - or see your savings right now with the free audit.
Shopify is a trademark of Shopify Inc. CartonPilot is not affiliated with or endorsed by Shopify.