LINE Yahoo Conversion API tag (Display Ads)

LINE Yahoo Conversion API tag (Display Ads) by Stape is a custom Google Tag Manager (GTM) server-side template designed to complement the LINE Yahoo Measurement tag. When the pixel fires in the browser, the tag sends conversion event data directly from your sGTM container to the LINE Yahoo Display Ads Conversion API. This improves conversion measurement accuracy, resilience against browser restrictions, and user data privacy. 

• Improved tracking reliability and resilience. The tag sends conversion events directly from the sGTM container to LINE Yahoo's Conversion API, bypassing browser limitations, ad blockers, and Intelligent Tracking Prevention (ITP).
• Enhanced attribution through cookie management. Automatically reads and sets Anonymous ID, Click ID, and Complementary Click ID cookies on the server side to extend cookie lifetime and improve attribution.
• Event deduplication. Uses Transaction ID / Event ID matching to deduplicate events between the browser-side Measurement Tag and the Conversion API, ensuring accurate metrics without double counting.
• Automated PII privacy protection. Hashes sensitive customer identifiers (emails and phone numbers) using SHA-256 before transmission.
• Automatic GA4 event mapping. Transforms standard GA4 event names (for example, purchase, add_to_cart, begin_checkout) into LINE Yahoo event types automatically.
• Faster server performance. The tag offers an Optimistic Scenario mode to respond to incoming requests immediately without waiting for the LINE Yahoo API response, minimizing latency.

• LINE Yahoo Conversion API tag (Display Ads) in the GTM Template Gallery
• How to set up LINE Yahoo Conversion API tag (Display Ads)