Square Squarespace integration that keeps the register and the online shop in step
For shops that take money on a Square register and also sell online through Squarespace. Square can be handed an order to fill and Squarespace cannot, so a website sale can be routed to the counter where the stock physically sits. Both shops tell us the moment something sells, so the other is corrected in under a second. Stock you edit yourself inside Squarespace is the slower path: we pick that up every couple of minutes.
From $19 a month for two shops · no credit card · connected in about ten minutes · nothing changes until you say so · Updated 25 August 2026
Square
SquarespaceHow to connect Square and Squarespace
Four steps and about ten minutes. The two connections are a login each; most of the time is us matching your catalogues, and nothing changes until you switch it on.
Connect Square
You sign in to Square and approve QuickSync. It covers your catalogue, stock and orders across the locations you pick.
Connect Squarespace
You generate an API key in Squarespace and paste it into QuickSync.
Let it match your products
We line the two catalogues up by SKU, then by title, and hand you a short list of anything we could not match. You decide what happens to those.
Watch, then switch it on
Leave it watching for a few days and check the numbers agree. When you are happy, let it start making changes, one shop at a time.
What a Square Squarespace integration actually moves
One row per job, based on how QuickSync connects to Square and Squarespace today. Where a side does not allow something, the cell says so.
| What | Square | Squarespace |
|---|---|---|
| Stock count | Both ways | Both ways |
| New listings | We can create and update | We can create and update |
| Prices | Sent, with your rule applied | Sent, with your rule applied |
| Orders in | Into QuickSync | Into QuickSync |
| Tracking back | Square does not accept one | Sent to the order |
| Photos and options | Photos, sizes and colours | Photos, sizes and colours |
| How fast we update it | Under a second | Under a second |
| How fast it tells us | The moment it happens | Orders instantly, stock every two minutes |
Running the register and the other channel by hand
A Square counter sale that never reaches Squarespace is how you oversell online. Holding a buffer in both places so you cannot is how you sit on stock you could have sold.
| Two shops, run by hand | Two shops, connected |
|---|---|
| The last one sells in both shops within the same hour | Whichever shop sells it, the other one drops to match |
| Typing the same stock numbers into Square and Squarespace each morning | One count, sent to both, without anyone opening a spreadsheet |
| Changing a price means editing the same product twice | Change it once and each shop gets the price you set for it |
| Orders in two dashboards, matched up by hand at the end of the week | Every order already matched to the right product |
| A refund leaves your numbers wrong until someone notices | A refund puts the stock back and tells both shops |
| Guessing how stale each shop’s number is | A sale on either shop reaches the other in under a second |
One Squarespace order, start to finish
Real timings, second by second.
Squarespace · order #447114:02:11Squarespace41sourceSquare41+0.3sCorrecting Square takes under a second once we have the sale. The order is in your packing list with the Squarespace order number on it, and a tracking number added later goes back to Squarespace on its own.
The other direction is the same: a sale on Square reaches Squarespace just as quickly, because Square pushes it to us the moment it happens too.
The limits: know them before you connect
Every Square Squarespace integration has constraints. These are the ones that apply here.
Sales are instant; stock edits wait
A sale on either side reaches the other in under a second. Stock you edit yourself inside Squarespace is the slower path: we check that every couple of minutes.
No tracking number back to Square
Square has no field for us to write a tracking number into, so shipping detail lives in QuickSync and in whichever shop the order came from. Counter sales rarely need it; posted ones are worth knowing about.
Nothing publishes itself to Square or Squarespace
Copying a listing from Square to Squarespace (or the other way) always waits for you to look at it. Stock is the only thing that moves on its own, and only once you have turned it on.
No, Square cannot take your Squarespace checkout
That is the answer to the question most people are actually asking, and it is not the one we solve.
Squarespace does not support Square as an online payment processor. Its own help pages say so, its forum says so, and the only checkout options are Squarespace Payments, Stripe and PayPal. Square connects for in-person selling through the Squarespace app and a Square Reader, and that is where it ends. Nothing we build changes any of this, because it is a decision Squarespace has made about its own checkout.
So if you came here to route your website’s card payments through the Square account you already use at the counter, the honest answer is that you cannot, and you should plan around Squarespace Payments or Stripe instead.
The question underneath it is usually a different one, though. People asking this generally have a Square till and a Squarespace shop selling the same things, and what they actually want is for the two to stop disagreeing about how many are left. That part is solvable, and it is what the rest of this page is about.
One count across the counter and the website
Sell it at the till, the website drops to match. Sell it online, the till knows.
Square and Squarespace each keep their own catalogue and neither will read the other’s. Left alone they drift apart within a weekend, and the way you find out is a customer buying the last one online while it is going through the till in front of you. QuickSync sits between them and holds one count, correcting each side from the other rather than making either the master.
Items pair up by SKU, and Squarespace is the tighter of the two at 60 characters against Square’s 80, so that is the length to design to. Anything longer gets truncated on the way to Squarespace and quietly stops matching, which is the single most common reason a connection looks live and still lets a count drift.
This is also the answer to the multi-location version of the question. If you sell at two markets on a Saturday and online at the same time, the count that matters is the one in the middle, not the one on whichever device happens to be in front of you.
One side tells us, the other we check
Squarespace announces orders. Stock you edit there, we look for.
A Squarespace order reaches us the moment it is placed, because Squarespace announces it. A stock number you edit by hand inside Squarespace is different: there is no announcement for that, so we check every couple of minutes and pick it up on the next look. Square tells us about both straight away.
In practice this means a sale on either side is handled quickly, and the only lag worth planning around is you editing a Squarespace quantity yourself and expecting the till to know within seconds. Keeping a little safety stock on your fastest sellers covers that window comfortably.
The limit to know before you start is tracking. Square has no field for us to write a tracking number into, so if you post an order that came through Square, the tracking stays in QuickSync rather than appearing on the Square record. Squarespace orders take a tracking number normally.
Two shops fits the smallest plan
Your catalogue size picks the plan, and your plan price covers two connected shops with every shop after that adding it again. Three shops on Lite is $38 a month.
Lite
$19/mo for two shops1,000 items and up to eight connected integrations, with stock matched on both sides automatically. Enough for Square and Squarespace on their own, at $19 a month for the two.
Pro
$29/mo for two shops2,500 items and up to eight connected integrations. Listings and orders sync here as well as stock. Most sellers running two shops properly end up here.
Ultra at $69 and Ultra+ at $99 add larger catalogues, price rules and setup help. Every plan starts with a 14-day free trial and no card.
Questions people ask about this pair
How quickly does Squarespace update after something sells on Square?
Under a second in normal conditions. Square tells us the moment the sale happens and we write the new count to Squarespace straight away. The reverse is the same when Squarespace sells. If either side is briefly unreachable we hold the update and keep trying rather than dropping it.
Can Square integrate with Squarespace?
For in-person payments only. You can take card payments through the Squarespace app with a Square Reader, but Squarespace does not accept Square as a processor for online checkout, where the options are Squarespace Payments, Stripe and PayPal. Keeping stock in step between a Square till and a Squarespace shop is a separate job, and that is the one QuickSync does.
Are Square and Squarespace the same company?
No. They are unrelated businesses with similar names, which is most of why this question gets asked so often. Square is a payments and point-of-sale company; Squarespace is a website and online store builder. Neither owns the other, and neither syncs stock to the other on its own.
How do I sync inventory between Square and Squarespace?
It takes a third-party tool, because neither platform reads the other’s catalogue. QuickSync matches items by SKU and holds one count between them, so a counter sale lowers the website and an online order lowers the till. Design SKUs to 60 characters or fewer, which is the tighter of the two limits.
Do I have to re-list my Square products on Squarespace?
No. We match your existing Square and Squarespace listings by SKU first, then by title, and hand you a short list of whatever we could not match. You can also copy a listing from one side to the other if you want it in both places; that step always waits for you.
Can I charge a different price on Squarespace?
Yes. Set a rule once for Squarespace: a percentage, a fixed uplift, or a price you type yourself. We apply it whenever the price changes, and nothing forces Square and Squarespace to the same number.
Does the tracking number go back to both shops?
Not to Square. Square has no way for us to send a tracking number back, so the shipping detail stays in QuickSync and in whichever shop the order came from.
Does a Squarespace order get recreated on Square?
No. The order stays on Squarespace. We pull it into your one QuickSync list next to your Square orders so you pack from one place, without creating a duplicate Square order for it.
What happens if a buyer cancels or I refund them on Square or Squarespace?
The stock goes back. A cancellation or a refund puts the item back into your count and we send the corrected number to both Square and Squarespace.
Which plan do I need for Square and Squarespace?
Lite covers Square and Squarespace. Lite is $19 a month for two shops and holds 1,000 items, with up to eight connected integrations. You would move up a plan for catalogue size, and your bill goes up by another $19 if you connect a third shop.
Selling somewhere else as well?
Each combination has its own page, including the limits that apply to that pair, not a generic Square write-up with the logo swapped.
Or read about one shop on its own
Every channel has a page covering exactly what syncs, what does not, and how fast.
Connect Square and Squarespace and watch one correct the other
Make one test sale and watch the other shop’s count drop. If it doesn’t work the way this page describes, you’ve spent ten minutes and no money.
No credit card required
Setup guides for this pair
Connect each shop with its own walkthrough, then come back to this page for how Square and Squarespace stay in step.