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 — Real Client Data

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

Here’s what a B2B SaaS client’s Campaign Manager looked like before and after LinkedIn CAPI:

Before — Insight Tag only, 34% match rate

Campaign Manager WDS Demo Client

⚠ Match Rate: 34%

⚠ Insight Tag only — corporate firewalls and iOS may block data. Consider LinkedIn CAPI.

Campaign	Impr.	Clicks	CTR	Leads	CPL	Source
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

After — LinkedIn CAPI active, 91% match rate

Campaign Manager WDS Demo Client

✓ Match Rate: 91%

✓ LinkedIn CAPI active — conversions received server-to-server. Full attribution enabled.

Campaign	Impr.	Clicks	CTR	Leads	CPL	Source
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 ✓

Amir K.

B2B SaaS · United Kingdom

✓ Verified Client

Lead Match Rate

Before: 34%

91%

↑ 2.7× more leads attributed

Cost Per Lead

Before: $203

$78

↓ 62% lower CPL

“We were about to pause LinkedIn entirely because the CPL looked terrible. After CAPI setup we realised we were attributing less than a third of actual leads — the real CPL had been $78 the whole time. We immediately doubled the budget.”

How It Works

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

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.

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.

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.

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 20-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 →

Prefer chat? WhatsApp me →