Why your Shopify conversion tracking broke on August 26, 2026

Last updated 2026-08-12

If your Meta or Google conversions suddenly dropped — or went to zero — around the end of August 2026, and nothing changed in your ad account, there is a very good chance this is why.

What actually changed

Shopify has been retiring checkout.liquid and the legacy ScriptTag API in stages. The final stage landed on August 26, 2026:

The Thank You page is where the Purchase event fires. That is the single most important event in your entire funnel: it is what Meta and Google optimise against, what your ROAS is calculated from, and what your attribution depends on. When the script that fires it stops loading, everything downstream quietly becomes wrong.

Why nobody warned you

Nothing errors. Your store keeps taking orders normally. Shopify still shows every sale. The only symptom is on the ad platform side — fewer conversions, worse ROAS, and campaigns that slowly start making bad decisions because they are learning from incomplete data.

Are you affected?

You are probably affected if any of these are true:

• You pasted tracking code into Settings → Checkout → Additional scripts at any point.
• A developer or agency added conversion tracking to your order status page.
• You installed a tracking app years ago that has not been updated.
• Your theme still contains a checkout.liquid layout file.

You are probably not affected if your only Meta tracking comes from Shopify's official Facebook & Instagram sales channel, or from an app that already uses a Web Pixel. Those were migrated for you.

How to confirm it in two minutes

1. Open Meta Events Manager → your dataset → Overview.
2. Set the date range to the last 30 days.
3. Look at the Purchase event count. If it drops sharply or flatlines in late August while your Shopify orders kept coming, that is your answer.
4. Compare that number to your actual order count in Shopify for the same period. The gap is what you are no longer tracking.

How to fix it

There are three options. All of them work; they differ in effort and in how much they protect you going forward.

Option 1 — Use Shopify's native Meta integration (free)

Install the official Facebook & Instagram channel from Meta and connect your pixel. It uses a Web Pixel, so it is not affected by the sunset, and it costs nothing.

This is the right starting point for most stores. Its weaknesses are that it is opaque when it breaks, and it will not tell you if it stops working — which, judging by its App Store reviews, it sometimes does.

Option 2 — Move your tracking to a Web Pixel yourself

If you have custom tracking you need to preserve, rebuild it as a custom pixel under Settings → Customer events. This runs in a sandbox, so code that expects window, document, or fbq() will need rewriting. Budget developer time for it.

Option 3 — Send conversions server-side (Conversions API)

Instead of relying on the browser at all, send the Purchase event from a server directly to Meta. This survives ad-blockers, iOS restrictions, and platform changes like this one, because there is no browser script to break.

What to do this week

1. Confirm the gap in Events Manager using the steps above.
2. Check Settings → Checkout → Additional scripts and note anything still in there.
3. Pick one of the three options and implement it.
4. Send a test purchase and confirm the event arrives in Events Manager.
5. Set a reminder to re-check in a week. Tracking that breaks silently once will break silently again.