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Home/LinkedIn CAPI
LinkedIn Conversions API

LinkedIn Sees Your Ads.
We Make It See Your Pipeline.

LinkedIn’s Insight Tag fires from the browser — corporate firewalls, iOS, and ad blockers cut that signal. LinkedIn CAPI sends your lead and conversion data server-to-server, so every form fill and demo request reaches your campaign attribution.

Book Free LinkedIn Tracking Audit → See Campaign Results
✓ Match rate 34% → 91% ✓ CPL drops 60%+ ✓ B2B lead attribution fixed
LinkedIn Campaign Manager
After CAPI Setup
Match Rate
91%
Lead CPL
-61%
Leads Found
+168%
Attribution
CAPI ✓
The Problem

Your LinkedIn campaigns look unprofitable. They’re not — you just can’t see the conversions.

Three reasons LinkedIn’s default tracking fails B2B advertisers:

47%

Corporate networks block the Insight Tag

LinkedIn’s audience is professionals — sitting behind enterprise firewalls and network proxies that block third-party scripts. The very people you’re targeting are the ones your pixel can’t see.

14 days

B2B sales cycles outlast your cookie window

Enterprise buyers research for weeks, then convert. LinkedIn’s browser cookie attribution window is 30 days by default, but cookies are cleared between visits. CAPI extends attribution with server-side matching.

60%

Leads incorrectly attributed to “Direct”

When the Insight Tag is blocked, LinkedIn gets no credit. Your analytics shows “Direct” as top source while your LinkedIn spend looks like it’s doing nothing — and budgets get cut on campaigns that were actually working.

Campaign Manager — Illustration

Same budget. Same campaigns. Just LinkedIn now seeing the actual leads.

An illustration of what typically changes in LinkedIn Campaign Manager once tracking is fixed. The client result below is real and written up in full.

Before — Insight Tag only, 34% match rate
Campaign Manager
⚠ Match Rate: 34%
📊 Performance
🏭 Campaigns
🌐 Audiences
🔗 Insight Tag
⚙ Settings
All Campaigns › Q4 Lead Gen
⚠ Insight Tag only — corporate firewalls and iOS may block data. Consider LinkedIn CAPI.
CampaignImpr.ClicksCTRLeadsCPLSource
Decision Makers — Q4 48,200 1,847 3.8% 12 $203 Tag only
Retargeting — Site Visitors 12,400 608 4.9% 4 $241 Tag only
Lookalike — Converters 31,000 892 2.9% 3 $287 Tag only
Total leads: 19 Avg CPL: $243
After — LinkedIn CAPI active, 91% match rate
Campaign Manager
✓ Match Rate: 91%
📊 Performance
🏭 Campaigns
🌐 Audiences
🔗 Insight Tag
⚙ Settings
All Campaigns › Q4 Lead Gen
✓ LinkedIn CAPI active — conversions received server-to-server. Full attribution enabled.
CampaignImpr.ClicksCTRLeadsCPLSource
Decision Makers — Q4 48,200 1,847 3.8% 31 $78 CAPI ✓
Retargeting — Site Visitors 12,400 608 4.9% 11 $88 CAPI ✓
Lookalike — Converters 31,000 892 2.9% 9 $97 CAPI ✓
Total leads: 51 Avg CPL: $87
SC
Sarah C.
VP Marketing · Cybersecurity SaaS · USA
Case study →
Demo requests reaching LinkedIn
Before: 0 for 8 months
100%
↑ Event fixed + CAPI added
Pipeline value per lead
Before: unprovable
4.7x
↑ vs other channels

“We knew LinkedIn leads were high quality but couldn’t prove it with data. Saifur found our conversion event was never firing — wrong trigger setup. After fixing it and adding CAPI, we could show the CFO that LinkedIn leads had 4.7x the pipeline value of our Google leads. Budget doubled the next quarter.”

How It Works

LinkedIn CAPI sends your conversions directly from your server — no browser required.

1
LinkedIn CAPI Credentials Setup
We configure your LinkedIn Marketing Developer Platform access and generate the CAPI credentials. This is what allows your server to communicate directly with LinkedIn’s attribution system.
2
Conversion Event Mapping
We map your key B2B actions — form submissions, demo bookings, free trial signups, contact requests — to LinkedIn conversion types. Each event sends hashed user data for maximum match rate.
3
GTM Server-Side Routing
Your LinkedIn CAPI events route through your GTM Server Container, alongside your other platform events. One server pipeline, all platforms covered — no additional infrastructure needed.
4
Match Rate Verification
We verify your match rate in Campaign Manager and confirm conversion data is flowing correctly. Target match rate: 85%+. If it’s lower, we debug until it’s right.
Results After LinkedIn CAPI
Match Rate
91%
Leads Recovered
+168%
CPL Reduction
-62%
Attribution
Server ✓
What Changes
Firewall-blocked conversions now counted
iOS attribution gaps closed
CPL drops as more leads get attributed
Bidding algorithms get better signal = better results
LinkedIn CAPI FAQ

Questions about LinkedIn Conversions API.

Yes — keep both. The Insight Tag provides page-view and demographic data that CAPI doesn’t. CAPI complements the tag by capturing conversions that the tag misses. Together they give you the highest possible match rate and the richest attribution data.
LinkedIn CAPI sends hashed versions of user identifiers (email, first name, last name) alongside conversion event data. All PII is SHA-256 hashed before leaving your server — LinkedIn receives hashed data only. This is GDPR-compliant when implemented with proper consent management, which we configure as part of the setup.
LinkedIn CAPI setup typically takes 2–3 business days. Day 1: credentials and event mapping. Day 2: GTM server-side configuration and testing. Day 3: verification in Campaign Manager and match rate confirmation. You’ll start seeing improved attribution data within 24 hours of going live.
Most B2B clients reach 85–92% match rate after LinkedIn CAPI setup. The exact rate depends on how much user data you collect at conversion (email is the strongest signal). If your forms collect first name, last name, and email, match rates of 90%+ are typical. We aim for at least 85% and debug until we get there.
Yes. LinkedIn’s algorithm uses conversion signal to optimise delivery. More conversion signal = better audience targeting = lower CPL over time. Clients typically see CPL drop 40–65% within the first 30 days after CAPI setup as the algorithm gets cleaner data to work with.
🔗 LinkedIn B2B Specialist

Stop letting corporate firewalls
hide your best leads.

Free 30-minute audit. We show you your current LinkedIn match rate, estimate what you’re missing, and walk you through exactly what CAPI would fix.

Book Free LinkedIn Audit →

Setup Complete — But We Don't Stop There

Every client gets a dedicated support member on WhatsApp · Response within 4 hours · 7–30 days post-setup coverage

See Support Plans →