LinkedIn Conversions API

LinkedIn Conversions API match rates drop to 40-60% when relying on email-only matching because li_fat_id—LinkedIn’s first-party click ID—expires as a browser cookie in just 7 days under Safari’s ITP restrictions. B2B sales cycles average 3-6 months, meaning the cookie dies long before leads convert. Server-side tracking solves this by persisting li_fat_id as server-side state rather than a browser cookie, lifting match rates to 95%+. With LinkedIn CPCs running $5-15+ per click, every unmatched conversion represents wasted budget that server-side persistence recovers.

LinkedIn Conversions API enables server-side tracking that bypasses ad blockers and browser restrictions, improving data accuracy from as low as 40% to near 100%. Unlike the browser-based Insight Tag, CAPI sends conversion data directly from your server to LinkedIn, capturing leads that Safari’s tracking prevention and ad blockers would otherwise hide. For WordPress B2B sites, this means accurate attribution across LinkedIn’s 365-day window—critical for long sales cycles—without learning GTM server-side infrastructure.