Conversion API for media buyers

Industry-leading conversion API for all major ad platforms

Help ad platforms optimize your campaigns with complete signal data.
RedTrack's conversion API integrations send enriched event data to Meta, Google, TikTok, and every other platform you advertise on - based on server-to-server data capture that restores the connection between your ad spend and ad performance.

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Top media buyers worldwide use RedTrack

5,021+

Media buyers using RedTrack at least twice per week in 2025

1 Billion+

Number of conversions tracked with RedTrack in 2025

$621,2M+

Value of revenue tracked with RedTrack in 2025

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Why pixel and browser-based tracking aren't enough in 2026

You're running ads across multiple platforms. But ad blockers, browser restrictions, and third-party cookie refusals are silently preventing 30-50% of your conversion data to ever reach your ads manager.

The old way (pixel-based)

The RedTrack way (conversion API)

Rely on pixels and client-side tracking that can’t get past ad blockers
Send all events directly to ad platforms via conversion API, even with ad blockers
Lose purchase events, lead events, and app events from iOS users who opt out of tracking
Capture conversions directly to your servers regardless of browser restrictions or device settings
Watch client-side tracking break every time privacy settings update
Use server-side tracking that’s always compliant with the latest privacy updates
Manually implement conversion tracking across every platform separately
Set up your tracking once and RedTrack pushes events to every ad platform
Guess whether ad platforms match conversions to the right campaigns
Rest easy knowing RedTrack’s server-side architecture and CAPI connections match conversion to the right offers, campaigns, ads, and keywords
Depend on third-party data and third-party cookies that are disappearing
Own your marketing data with first-party data collection across touchpoints

When your advertising efforts depend on accurate data, browser-based tracking is a liability. You need conversion APIs that sends event data directly to ad platforms, regardless of browser settings or ad blockers.

Own your marketing data with first-party data collection across touchpoints

Direct integrations without developer overhead

Many server-side conversion tracking setups require dedicated development resources, ongoing maintenance, and weeks to implement properly. RedTrack gives you direct integrations via our existing network or simple API connections to all major platforms. Most businesses complete the setup in under an hour, no engineering team required.

Deduplication that keeps your data clean

When you run campaigns across Meta, Google, TikTok, and Pinterest simultaneously - which you should - events can fire twice on different platforms. RedTrack's automatic deduplication detects and removes duplicate events before they reach Facebook Ads Manager or any other platform. Your data accuracy stays intact.

One tool to send conversion signals to every ad platform

Send enriched conversion signals to Facebook, Google, TikTok, Pinterest, Snapchat, Bing, and other platforms from a centralized location - without investing resources in separate development resources, separate access tokens, and separate maintenance. RedTrack’s API connects your campaigns to every platform. Update your tracking once, and your changes propagate everywhere.

RedTrack is the ideal cookieless tracking tool for

Ecommerce businesses and DTC brands

You can't rely on ad platform optimization when pixels only see half your conversions.
Spending $8,000/month across Facebook and Google. Campaigns look mediocre—2.1x ROAS, rising CPAs. So you cut budgets, kill "underperforming" ad sets, shift spend. Three months later, revenue is down 30%.

The problem wasn't your campaigns. It was your tracking. Facebook's pixel saw 55% of actual conversions. It couldn’t see the other 45% because of cookie-blockers, Safari or iOS users, or Shop Pay checkouts that prevented tracking. So Facebook optimized toward a distorted version of your customer. Every budget decision, audience tweak, and creative test was based on incomplete data.

Worse: Shopify shows 280 orders this month. Facebook claims 140. Google attributes 60 more. The remaining 80 conversions don't exist in any ad platform - no optimization signal, no lookalike data, no conversion value. Your best customers, the ones using privacy browsers or accelerated checkout, are completely invisible to every ad platform, so you’re burning through your budget trying to find more of them.

RedTrack fixes this with:

  • Full conversion API implementation

    Connect directly to Facebook CAPI, Google Enhanced Conversions, TikTok Events API, Pinterest, Snapchat, and Microsoft UET. Server-to-server connections send conversions while bypassing browsers entirely. iOS users, cookie-blockers, and accelerated checkout customers all become visible again.

  • Event deduplication

    RedTrack removes duplicates automatically. Each event you track is attributed to the platform that produced it. Platforms see accurate counts, not inflated numbers wasting optimization budget.

  • Enriched conversion data

    Standard pixels send: purchase happened, value was X. RedTrack sends: purchase value, customer LTV, product category, new vs. returning, full checkout path. Platforms optimize toward your complete buyer profile, not just anyone who clicks.

The outcome:

Recover 40-50% of the conversion signals browser tracking misses. Feed accurate data to algorithms and watch mediocre campaigns become genuinely profitable. Build lookalike audiences from complete customer data. Reduce CPAs as algorithms optimize toward real buyers. Scale confidently on reliable data, not pixel fragments.

Affiliate media buyers

You can't optimize traffic sources when the conversion signals you feed ad platforms are not reliable.

You’re running paid traffic to affiliate offers through Facebook and Google. Clicks land on your storefront, some convert on third-party sites. You know this because postbacks occasionally fire and your dashboard shows some conversions.
But your ad platforms? Complete chaos. Facebook pixel fires on your landing page, but can't track what happens after users click through to an affiliate checkout. Google loses users the moment they leave your site. You're feeding both platforms zero conversion signals, so their algorithms have no idea who actually bought, which audiences convert, or which creatives attract real buyers. You're paying premium CPMs to reach audiences that the platforms are guessing about.

Worse: You've tried workarounds. Server-side postbacks to your own tracking. Custom javascript firing synthetic conversion events when users click affiliate links (not when they actually buy). These patches work temporarily, then performance collapses because you trained Facebook to find people who click, not people who convert. CPCs drop while actual ROI craters.

RedTrack fixes this with:

  • Closing the attribution loop through CAPI

    When a real conversion fires on a third-party network, RedTrack receives the S2S postback, confirms it's a legitimate purchase, then immediately sends accurate conversion events to Facebook CAPI, Google Enhanced Conversions, TikTok Events API, and other connected platforms. They receive real purchase signals from real buyers. No synthetic events. No click-proxies. So they know how to optimize your campaigns for conversions.

  • Enriched conversion signals

    RedTrack doesn't just tell Facebook "a conversion happened." It sends data about the commission value, product category, affiliate network, and new vs. returning customer status. RedTrack passes dynamic values through CAPI so platforms optimize toward the highest-value conversions. This makes Google Smart Bidding and Facebook Value Optimization finally work properly.

  • Multi-network postback consolidation

    Running offers across five or more affiliate networks? Each fires postbacks at different times with different formats. RedTrack normalizes postbacks from every network into standardized conversion events, routing clean data to each ad platform's API simultaneously.

  • Lookalike audiences from actual buyers

    Instead of building lookalikes from everyone who visited or clicked, RedTrack sends actual purchaser data through CAPI. Build audiences from people who completed the full funnel - browsed, clicked through, and converted on affiliate checkouts. The result - audiences who look like your best customers, lower CPMs, and higher conversion rates.

The outcome:

Feed algorithms accurate conversion signals to actually optimize campaigns. Watch CPAs drop as platforms learn from real purchase data instead of click proxies. Build lookalike audiences from verified buyers. Scale profitable offers confidently, knowing every optimization decision reflects what actually.

Performance marketing agencies

You can't retain clients when your campaign reports don't match their analytics data.

You’re managing 18 ecommerce clients. Every month, you send reports showing conversions, ROAS, and CPA. Every month, five or six clients respond: "The numbers look good, but they don’t match what we see in Google Analytics. Plus, revenue is down. What's happening?" You explain about iOS privacy, attribution windows, and browser restrictions. Clients hear one thing: the agency we're paying doesn't know what's working.

Your real problem is that you get incomplete conversion data across every account. Client A's pixel captures 52% of actual conversions. Client B's Google tracking drops 38% of Safari purchases. Client C's WooCommerce plugin fires inconsistently on mobile checkout. You're optimizing on fragmented data, then defending results you can't fully get behind.

Worse: You know Conversion API is the fix. But implementing it properly is a time-draining project for each client. Facebook CAPI needs server access and custom coding. Google Enhanced Conversions needs developer implementation. TikTok's API is documented differently. Each client runs different tech stacks. You're spending 40% of your team's time on tracking implementation instead of campaign management - and you still can't guarantee accurate data tracking.

RedTrack fixes this with:

  • Single-platform CAPI management

    Connect Facebook CAPI, Google Enhanced Conversions, TikTok Events API, Pinterest, and Microsoft UET for every client from one interface. No per-client custom coding. No separate implementation timelines for WooCommerce or Shopify. Just straightforward setup processes for your entire portfolio - no developer work required.

  • Standardized conversion data across tech stacks

    Whether clients run WooCommerce, Shopify Plus, or headless ecommerce, RedTrack normalizes conversion events into the same format. You get consistent data and comparable metrics across all clients.

  • Conversion data that reconciles

    Generate reports where Facebook, Google, and checkout orders match within 5% of each other. No more defending platform discrepancies. No more explaining pixel limitations. Match the conversion data against actual sales and revenue.

The outcome:

Eliminate the gap between reported ROAS and client bank deposits. Onboard new clients with complete CAPI tracking from day one instead of patching after campaigns underperform. Spend billable hours on strategy, not implementation. Retain clients longer because your data matches their analytics and revenue. Improve client campaigns faster with better optimization signals.

Send ad platforms better conversion data today

Feed ad platform algorithms with enriched conversion data directly from your back end so they can optimize your campaigns better.

How RedTrack’s conversion API helps

Give ad platform algorithms data for campaign optimization

Send enriched event data directly to your ad platforms

Traditional tracking relies on the user's browser to fire pixels and send events to ad platforms. But when ad blockers interfere or iOS users opt out of tracking, those events never reach your ads manager.
RedTrack captures event data directly from your back end, enriches it, and sends it to ad platforms via API, so the entire process bypasses the browser entirely. The result: ad platforms do a better job of optimizing your campaigns because they receive up to 45% more conversion data.

Gain complete control over what you send

Choose exactly which conversion events to share with each platform. Purchase events, lead events, form submissions, phone calls, in-store purchases — turn any customer interaction you track server-side into a conversion event for ad optimization.

Higher event match quality

Ad platforms optimize better when they know who actually converted. Telling Meta or Google that "a conversion happened" is like giving someone directions without a starting point.
RedTrack captures first-party data (IP address, Click ID, email) at the moment of the click, then bundles it with the conversion event and sends it through CAPI. Your ad platforms can now match the sale to a specific person — and more importantly— find more people like them.

ad tracking software

Help ad platforms optimize for the entire customer journey

Connect the click to the customer before the sale even happens

Most tracking tools only send data after the conversion. RedTrack starts collecting first-party signals at the click level, building a complete customer profile before the conversion fires.
When the conversion event happens, our CAPI gets everything it needs to match the event to a real user, not just a timestamp.

Use the data you collect through offline events

Connect your CRM data to send offline conversions back to your ad platforms. Phone calls that became deals, in-store purchases from online leads, subscription renewals, and so on.
All your offline events flow into the same surfaces as your web conversions, giving the ad platform algorithms a complete picture of your customer journey.

Send platforms the full customer story, not just the final chapter

A lead clicks your Facebook ad, clicks again on your TikTok retargeting ad, talks to your sales team, and signs a contract three weeks later.
Without seeing the entire customer journey, your ad platforms never knows the deal closed, so they optimize for form fills instead of actual closed deals.
RedTrack sends the data about the journey that lead to a closed deal back to the ad platforms through CAPI, teaching them which clicks actually turn into customers worth having.

ad tracking software

Trusted by performance marketers

StarStarStarStarStar
4.4 on G2

Give your ad algorithms better data to work with

Connect RedTrack's CAPI to your ad platforms and start sending enriched conversion events that improve match rates, lower CPAs, and scale profitably.

No credit card required for 14-day trial

Frequently Asked Questions

  • What is a conversion API and how is it different from a pixel?

    A pixel is JavaScript code that fires in the user's browser when a conversion happens. A conversion API sends conversion events directly from your server to the advertising platform's server—bypassing the browser entirely.

    When ad blockers, iOS users, or browser restrictions prevent pixels from firing, conversion API sends the data anyway. The key benefit: you capture conversions that pixel-based client-side tracking misses.

  • How does Facebook Conversions API work with my existing pixel?

    Facebook Conversions API works best alongside your existing Facebook Pixel, not instead of it. The pixel captures browser events; the conversion API captures server events. Together they provide redundant coverage—if one misses a conversion, the other catches it.

    RedTrack automatically deduplicates event and website data, so the same conversion doesn't get counted twice in Facebook Ads Manager.

  • What events can I send through the conversion API?

    Any conversion event you can define: website events, purchase events, lead events, form submissions, phone calls, app events, in-store purchases, subscription starts, and custom web events specific to your business.

    For offline events like CRM data or phone call outcomes, we support bulk import and automated sync.

  • How does this work with iOS users who opted out of tracking?

    iOS users who opted out block the Meta Pixel entirely, so their browser events never fire. But they don't block server-side tracking.

    When a conversion happens, your server processes it and sends it directly to Facebook's server via the Conversions API. iOS users' conversions get captured and attributed correctly.

  • What first-party data should I send with each event?

    The more first-party data you send, the higher your event match rate. At minimum, send email and phone number (hashed). For maximum Facebook conversions match rates, include name, address, city, and any customer identifiers you have. RedTrack automatically hashes all personal identifiers before sending, so platforms receive matching data without exposing raw user information.

  • What's the difference between browser events and server events?

    Browser events fire from the user's browser when actions happen, so these are what the Facebook Pixel captures. Server events fire from your server independently of the user's browser. Server events can't be blocked by ad blockers, aren't affected by iOS restrictions, and don't depend on JavaScript loading correctly.

    Server-side tracking is more reliable, but browser events provide faster real-time feedback. Using both on the same surfaces gives you the best of both.

  • How long does the API integration take to set up?

    Most teams complete setup in under an hour. Connect your platform via API key, configure which conversion events to track, and verify data is flowing through Events Manager. No development resources needed for standard setups.

    For advanced configurations like offline events or custom server-side implementations, our support team provides hands-on setup assistance.

  • Can I use this to set up the conversions for Google as well?

    Yes. RedTrack's server-side APIs send web events and conversion data to Google Ads, Google Analytics, and other Google properties alongside Facebook Conversions API.

    When you implement conversions API, the same events that go to Meta also go to Google and other ad platforms—with the same first-party data enrichment improving match rates across all of them.

  • Does server-side conversion tracking comply with GDPR and other privacy regulations?

    Yes. Server-side tracking keeps all data processing on your infrastructure. You control what data gets sent, what gets anonymized, and how long it's retained.

    Unlike third-party cookies and third-party data sharing, first-party server-side tracking generally complies with GDPR, CCPA, and other privacy regulations without requiring intrusive consent banners. Consult your legal team for specifics on your use case.

Fix your attribution before your next campaign goes live

Connect RedTrack's CAPI in minutes and start sending ad platforms the conversion signals they need to find more customers who actually buy.