Square Squarespace Integration: Keep Your Register and Online Shop in Sync

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.

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.

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.