Facebook Conversion API (CAPI) Setup

Since iOS 14+, Facebook Pixel alone misses a significant portion of conversions. The Conversions API sends your event data directly from your server to Meta, restoring visibility, improving campaign optimization, and ensuring your ad spend is guided by co

Meta Pixel browser-side setup Conversions API (CAPI) server-side setup iOS 14+ conversion data recovery Event deduplication configuration SHA-256 customer data hashing Event Match Quality optimisation Dynamic Product Ads event setup Lead generation event tracking Meta audience & remarketing setup Events Manager validation & QA

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Facebook Conversion API (CAPI) Setup

Restore lost Facebook ad data caused by iOS 14+ and ad blockers with a reliable server-side Conversion API implementation.

Meta Pixel Setup

Meta Pixel Setup is the foundational step for any business running Facebook and Instagram ads. A correctly implemented Meta Pixel tracks every important user action on your website — page views, product views, add to cart, checkout initiations, purchases, lead form submissions, and registrations — and sends this data to Meta to power campaign optimisation, conversion reporting, and audience building. We implement the Meta Pixel via Google Tag Manager, giving you clean control over when and how the Pixel fires without touching your website code. We configure all standard events with the correct parameters (content_ids, content_type, value, currency, num_items) required for Dynamic Product Ads, and set up custom events for actions unique to your business — quote requests, trial sign-ups, appointment bookings, or any other conversion that matters. We also configure Meta's Automatic Advanced Matching, which hashes and sends customer data (email, phone, name, address) from form fields to improve event match rates by up to 30%. After setup, we validate every event in Meta Events Manager and Meta Pixel Helper, confirm that Standard Events appear with the correct parameters, and ensure no duplicate PageView events are firing. A properly implemented Meta Pixel is the prerequisite for everything from conversion-optimised ad delivery to Advantage+ Shopping campaigns.

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Facebook Conversion API Setup

Facebook Conversion API (CAPI) Setup establishes a direct, server-to-server connection between your website and Meta's platform, sending conversion event data without relying on the browser — bypassing iOS 14+ tracking restrictions, ad blockers, and cookie-based attribution limitations that are causing most businesses to miss 20–40% of their Meta-attributed conversions. Our CAPI implementation sends events from your server (via server-side GTM or a direct API integration) to Meta's Conversions API endpoint, running in parallel with your browser-based Meta Pixel. We configure SHA-256 hashing of all customer data parameters (email, phone, first name, last name, city, state, country, zip, date of birth), implement event ID deduplication to prevent double-counting, and map all your standard and custom events to the correct CAPI event names and parameters. After implementation, we verify event quality in Meta Events Manager, check that Event Match Quality scores have improved (target: 7.0+ out of 10), confirm deduplication is working correctly, and compare CAPI-reported conversions against your actual order data. Higher Event Match Quality directly translates to better ad delivery, lower CPMs, improved ROAS, and more accurate conversion attribution across your Meta campaigns.

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Event Match Quality Optimization

Event Match Quality (EMQ) Optimization is a specialist service focused on maximising the score that Meta assigns to each conversion event based on how well the customer data you send can be matched to a Meta user profile — directly impacting your ad delivery efficiency, ROAS, and conversion attribution accuracy. Meta's Event Match Quality score is determined by how many customer identity parameters you send (email, phone, first name, last name, city, state, country, zip, date of birth, gender, external ID, IP address, user agent, Facebook Login ID, click ID) and how accurately they match Meta's user records. A score below 6.0 means Meta cannot reliably attribute many of your conversions to specific users, weakening your Advantage+ campaigns and lookalike audiences. We audit your current Meta Pixel and CAPI event payloads, identify which customer data parameters you are collecting but not sending, implement additional parameter capture (particularly phone number, which often dramatically improves EMQ scores), ensure correct formatting of all parameters (lowercase, trimmed, correctly hashed), and activate Automatic Advanced Matching for all form-based events. The result is measurably higher Event Match Quality scores, better ad optimisation, and more conversions attributed back to your Meta campaigns.

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Facebook Ecommerce Tracking

Facebook Ecommerce Tracking with Meta Pixel and Conversions API gives your Facebook and Instagram Shopping campaigns, Dynamic Product Ads, and Advantage+ Shopping campaigns the complete, accurate product and purchase data they need to deliver your ads to the highest-value audiences and report true ROAS. We implement the complete Meta ecommerce event funnel — ViewContent (with product ID, name, price, and category), AddToCart, InitiateCheckout, AddPaymentInfo, and Purchase (with product IDs array, value, currency, and number of items) — both via Meta Pixel in the browser and via Conversions API from your server. We synchronise your product catalogue feed with Meta Commerce Manager, ensuring product IDs in your events match the IDs in your catalogue for Dynamic Product Ads to function correctly. We also configure purchase event parameters for accurate revenue reporting, set up the Meta Pixel for your specific platform (Shopify, WooCommerce, Magento, or custom), and validate every event in Meta Events Manager. For ecommerce businesses spending on Meta, this complete tracking setup is the difference between Dynamic Product Ads that retarget based on actual browsing behaviour and ads that show random products to unqualified audiences.

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Lead Generation Tracking

Lead Generation Tracking for Meta Ads captures every enquiry, form submission, quote request, appointment booking, and phone call click from your website and sends it to Meta as a Lead conversion event — giving Meta's delivery algorithm the conversion signal it needs to find more users likely to become your customers. We implement the Meta Lead event (and any relevant custom events for your specific lead types) via both Meta Pixel and Conversions API, with customer data parameters to maximise Event Match Quality. We configure the event to fire on genuine form submission confirmation (not just button clicks), handle multi-step forms and AJAX submissions, and include conversion value parameters where applicable to enable value-optimised delivery. We also connect your Facebook Lead Ads (native Meta lead forms) to your CRM or email platform via Zapier, Make, or direct API integration, ensuring leads captured within Meta are immediately available in your sales pipeline. For businesses where the cost and quality of leads is the primary KPI, our Meta lead generation tracking setup gives you the data needed to identify which campaigns, audiences, and creatives produce the highest-value leads.

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Meta Tracking Audit & Fixes

A Meta Tracking Audit & Fixes service is a comprehensive review and repair of your entire Meta Pixel and Conversions API setup — identifying and fixing every issue that is causing missed conversions, duplicate events, poor Event Match Quality scores, or inaccurate data in Meta Events Manager. Our audit process reviews your Meta Pixel implementation (checking for duplicate Pixel IDs, multiple PageView fires per page load, missing standard events, incorrect event parameters, missing Automatic Advanced Matching), your Conversions API setup (checking event deduplication, customer data hashing, parameter completeness, and server response error rates), and your Meta Events Manager data quality alerts. We compare reported conversions in Meta against your actual order management system data to quantify how much conversion data is currently being missed. Common issues we discover and fix include: Pixel firing on all pages but missing on Shopify's checkout domain, purchase events missing the items array, Conversions API events not being deduplicated against Pixel events, Event Match Quality below 6.0 due to missing phone or email parameters, and custom conversions defined incorrectly in Meta Events Manager. After the audit, your Meta tracking will be clean, complete, and optimised for maximum campaign performance.

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Portfolio

Facebook CAPI Setup Results

How Conversions API implementation restored lost event data and dramatically improved our clients Meta Ads performance.

Case Study

Meta Conversion API Setup for Shopify eCommerce

Meta Conversion API Setup for Shopify

Case Study

Recovering Ad Attribution After iOS Privacy Changes

Recovering Attribution with Meta CAPI After iOS

Case Study

CRM Lead Data Integration with Facebook Conversion API

CRM Lead Integration with Facebook CAPI

Worried About Your Budget?

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Take a look at our pricing and packages that will fit your needs and budget.

CAPI Starter

Basic Facebook CAPI for essential event recovery

$199

$99 /One Time

Meta Pixel Setup & Audit
Conversion API Integration
Purchase & Lead Events
Event Match Quality Optimization
Deduplication Setup
Basic Attribution

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CAPI Professional

Advanced CAPI with server-side event enrichment

$449

$249 /One Time

Server-Side CAPI Implementation
Full Standard Events Setup
Customer PII Hashing
Advanced Match Setup
Offline Event Integration
Custom Audience Signals
Ad Account Pixel Audit
Priority Support

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CAPI Enterprise

Full CAPI stack with CRM and multi-platform integration

$799

$399 /One Time

CRM-to-CAPI Integration
Leads & Offline Purchase Signals
Multi-Pixel Management
Cross-Platform Deduplication
Attribution Window Optimization
Custom Conversion Events
Monthly CAPI Performance Reports
Dedicated Meta Specialist

Meta advertising has fundamentally changed since Apple\'s iOS 14 App Tracking Transparency (ATT) update in 2021. The update gave iOS users the ability to opt out of cross-app tracking, and the vast majority of them do. Combined with the growing use of ad blockers in desktop browsers and the deprecation of third-party cookies, the result is that the standard Meta Pixel — which runs in the browser and relies on cookies and Apple\'s IDFA — now misses a significant proportion of the conversions your Meta campaigns generate. The Meta Conversions API (CAPI) was built specifically to solve this problem. Instead of relying on the browser to send conversion events to Meta, CAPI sends them directly from your server — bypassing every browser-based restriction that causes conversion data loss. Running CAPI in parallel with your browser Pixel (with correct event deduplication) gives Meta the most complete picture of your customers\' actions, improving delivery optimisation, reducing CPMs, and attributing more conversions to your campaigns. At Adslytics, our Facebook Conversion API setup is not a simple plug-and-play installation. We architect the optimal data flow for your specific platform and business, implement SHA-256 hashing of all customer data parameters (email, phone number, name, address, date of birth) to protect user privacy while maximising Event Match Quality, configure precise event deduplication to prevent double-counting, and validate the entire setup against Meta\'s Event Match Quality diagnostic tools. The quality of your CAPI implementation is measured directly by Meta\'s Event Match Quality score — a rating from 0 to 10 that indicates how well Meta can match your server-sent events to actual Meta users. A higher EMQ score means more conversions are attributed to your campaigns, better delivery optimisation, lower cost per result, and improved ROAS. We target an EMQ score of 7.0 or above for all our CAPI implementations. For businesses investing meaningfully in Meta advertising, a properly implemented Conversions API is the most impactful single measurement improvement you can make to your Meta account performance.

Got Questions?

Frequently Asked Questions

The Facebook Conversions API is a server-to-server integration that sends conversion event data from your server directly to Meta, bypassing the browser-based Meta Pixel. It is needed because iOS 14+ privacy changes, ad blockers, and browser cookie restrictions cause the browser Pixel to miss 20–40% of conversions for most businesses. CAPI ensures Meta receives complete event data regardless of browser-level blocking.

You should run both. The recommended setup is "redundant" — both the browser Meta Pixel and CAPI sending the same events simultaneously, with event ID deduplication configured so Meta only counts each conversion once. The browser Pixel provides faster event delivery and some additional browser-side signals; CAPI provides the fallback that captures events the Pixel misses. Running both maximises data completeness.

Event Match Quality is Meta's score (0–10) indicating how well the customer data you send with events can be matched to Meta user profiles. Higher scores mean more conversions are attributed to your ads, better delivery optimisation, and improved ROAS. EMQ is determined by which customer data parameters you send (email, phone, name, address, etc.) and how accurately they are formatted. We optimise your implementation to achieve the highest possible EMQ score.

CAPI improves ad performance in several ways: more complete conversion data means Meta's delivery algorithm has better signals for audience optimisation; higher Event Match Quality enables more accurate attribution, making your reported ROAS more representative of actual performance; recovering missed conversions gives Advantage+ campaigns more signals to learn from; and better conversion data enables more effective lookalike audience generation.

The most impactful parameters for Event Match Quality are: email address (hashed), phone number (hashed), first name, last name, city, state/region, country, postal/ZIP code, and date of birth. Email and phone number are the highest-impact parameters. All customer data must be SHA-256 hashed before sending. We configure your implementation to capture and hash the maximum set of parameters available at each event point.

CAPI sends data from your server, so the implementation approach depends on your platform. For Shopify, there is a native Meta app with built-in CAPI support. For other platforms, we implement CAPI via server-side GTM, a custom server-side integration, or platform-specific webhooks. In all cases, we handle the complete implementation without requiring significant changes to your website's frontend.

iOS 14+ prevents apps from tracking users across apps and websites using Apple's IDFA without explicit consent, and browsers on iOS (Safari, Chrome, Firefox) apply ITP restrictions that limit cookie-based attribution. CAPI bypasses these restrictions by sending data server-to-server, using customer data parameters (email, phone) to match conversions to Meta users rather than relying on device identifiers or cookies.

Event deduplication prevents Meta from counting the same conversion twice when both the browser Pixel and CAPI send the same event. Deduplication works by including a unique "event_id" parameter with every event — the same event_id in both the Pixel and CAPI event for the same conversion. Meta uses this ID to identify and deduplicate matched events within a 48-hour window. Without correct event IDs, you risk double-counting conversions.

Yes. CAPI can send any standard or custom Meta event — ViewContent, AddToCart, InitiateCheckout, Purchase, Lead, CompleteRegistration, Subscribe, FindLocation, and custom events. For lead generation businesses, we implement the Lead event with relevant customer data parameters from your form submissions, sent via both browser Pixel and CAPI for maximum data completeness and Event Match Quality.

Meta Events Manager provides diagnostic information including event volume by source (browser Pixel vs. CAPI), Event Match Quality scores, and data quality warnings. After implementation, we validate that events appear with the correct source breakdown, deduplication is working (event volume should increase compared to Pixel-only, not double), and EMQ scores have improved. We monitor these metrics for 7 days post-implementation to confirm correct operation.

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