shopify meta pixel · meta pixel id · checkout events · no app install
Example (made-up): north-pine-candles.com sends every Purchase to Meta twice — from the Meta app and from a custom pixel left over from an old Thank you page script — so Meta Ads counts 46 purchases for 23 Shopify orders: $690.00 of the $1,380 ad spend is credited to purchases that are missing in Shopify, and each order really cost $60.00, not $30.00.
- Where each Meta pixel ID is installed — Meta app, theme code, each custom pixel by name, GTM — and the same ID loaded twice.
- Meta's own answer for every ID (live, or deleted/mistyped) plus the 2026 Shopify settings that cut data: "optimized" sharing and theme-only pixels that cannot send Purchase.
- Pro, every day: a real browser opens home → product → Add to cart, counts each Meta event (nothing is sent to Meta) and alerts you by email, Discord or Slack the day something changes.
Count check: Meta purchases vs Shopify orders
Same date range in both. The made-up example is filled in; type your own numbers.
Pro: the daily monitor
Up to 5 stores.





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