The WeltPixel Blog

Server-side tracking, e-commerce analytics, and development insights for Magento and Shopify — from the team behind 25+ premium extensions.

The WeltPixel Blog

Server-side tracking, e-commerce analytics, and development insights for Magento and Shopify — from the team behind 25+ premium extensions.

Why Server-Side Retries Double-Count Shopify Purchases

June 17, 2026

Quick AnswerWhen a purchase-tracking handler takes longer than Shopify's 5-second webhook response window, Shopify re-delivers the order up to 8 times over about 4 hours. Without idempotency, each retry can... Read more...

Bing, Pinterest and X Conversion Tracking on Shopify: What's Possible

June 16, 2026

Quick AnswerAll three platforms have a working conversions API in 2026, but only Pinterest has a native Shopify sales channel. Microsoft/Bing (UET) and X (formerly Twitter) install through Shopify's Custom... Read more...

Multi-Currency Shopify: Why Ad Platforms Show the Wrong Conversion Value

June 16, 2026

Quick AnswerIf you run Shopify Markets and your ad platforms show a conversion value that does not match the customer's receipt, it is almost always because the value is sent... Read more...

Why Shopify Marks Logged-In and Cross-Device Orders as Direct

June 16, 2026

Quick AnswerShopify attributes orders with a per-device browser cookie and a Last non-direct click model over a 30-day window. When a logged-in shopper buys from a different browser or device... Read more...

Attribution Windows and Reporting Delays on Shopify Explained

June 16, 2026

Quick AnswerYour conversion numbers keep changing because each platform books the same sale on a different date and finalizes data on its own clock. Google Ads defaults to a 30-day... Read more...

Why Google Ads Reports Fewer Conversions Than Shopify

June 16, 2026

Quick AnswerGoogle Ads counts fewer conversions than Shopify because Shopify labels any "Google" referrer as a Google sale, while Google Ads only counts purchases tied to a paid ad click.... Read more...

Shopify Cookies Explained: What _shopify_y Actually Tracks

June 15, 2026

Quick Answer_shopify_y is Shopify's own first-party analytics cookie that identifies a unique visitor across sessions, listed in Shopify's cookie policy with a one-year lifetime. As of January 1, 2026, Shopify... Read more...

Why Customer Email Is Missing From Your Shopify Pixel Events

June 15, 2026

Quick AnswerSince December 10, 2025, Shopify strips customer PII (name, email, phone, and address) from web pixel event payloads at runtime unless the pixel's app is approved for Shopify's protected... Read more...

Shopify Can Pause Your Pixel: The Optimized Data Sharing Default Explained

June 15, 2026

Quick AnswerOn January 13, 2026, Shopify made "Optimized" the default data-sharing mode for marketing app pixels, which lets Shopify pause some or all of a pixel's data sharing when it... Read more...

Reddit Conversions API on Shopify: Setup, Verification, and What It Fixes

June 15, 2026

Quick AnswerReddit's Conversions API needs two separate credentials from Reddit Ads Manager: a Pixel ID and a Conversions API access token (generated under Events Manager, non-expiring, and shown only once).... Read more...

How Shopify Attribution Works: First Click, Last Click, and Direct Orders

June 15, 2026

Quick AnswerShopify Admin attributes orders with a Last non-direct click model by default, over a 30-day window, crediting the last non-direct channel a shopper touched before checkout. An order shows... Read more...

Shopify Conversion Tracking Checklist: 10 Things to Verify After Install

June 12, 2026

Quick AnswerRun this 10-point verification within 24 hours of installing any tracking app. The two most-missed checks in 2026 are new: Shopify's "Optimized" pixel setting, default since January 13, 2026,... Read more...