OutGainer Tag

Google Tag Manager for Shopify, storefront and checkout. Free.

5-minute setup. One switch in your theme and one pasted pixel. No theme code to edit.
Checkout and purchase tracking. GA4-format events with tax, shipping, discounts and deduplicated orders.
Ready-made GTM container. GA4, Google Ads, Meta and TikTok tags built from your IDs, plus a live check mode.