Follow Up Boss Pixel: Complete Lead Attribution Guide
The Follow Up Boss Pixel is a JavaScript tracking snippet you embed on your real estate website. Once installed, it captures the lead source, referring URL, and campaign data for every contact form submission and passes that information directly into Follow Up Boss — so you can see exactly which marketing channels are producing leads without manual tagging. Setup takes about 10 minutes and requires no developer.
If you run any paid advertising — Google Ads, Facebook, Zillow Premier Agent, or even just an organic SEO strategy — you are generating leads from multiple sources simultaneously. The question that determines whether your marketing budget works for you or against you is simple: which sources are actually producing clients, not just leads?
The Follow Up Boss Pixel is the tool FUB built to answer that question automatically. This guide covers how it works, how to install it, what data it captures, and how to use attribution data to make sharper marketing decisions — including how Follow Up Ace's behavioral intelligence complements what the Pixel tracks.
What is the Follow Up Boss Pixel?
The Follow Up Boss Pixel is a lightweight JavaScript tracking snippet that you add to your real estate website's <head> section. When a visitor submits a lead capture form on your site, the Pixel fires and sends attribution data — which page they came from, what their referring source was, and any UTM parameters present in the URL — directly to the matching contact record in Follow Up Boss.
Follow Up Boss is owned by Zillow Group, and the Pixel is part of their first-party tooling for agents who drive leads through their own websites rather than relying solely on portal lead streams. The Pixel is designed for IDX-enabled agent websites, landing pages, and any page where you have a lead form that feeds into FUB.
Without the Pixel, every lead that comes through your website lands in FUB with the same source label — "Website" — regardless of whether the visitor came from a Google Ad, a Facebook retargeting campaign, or an organic blog post. The Pixel breaks that generic label apart into granular, actionable attribution data.
How does the FUB Pixel track lead sources?
The Pixel captures attribution data at the moment of form submission by reading two things: the referring URL the visitor arrived from, and any UTM parameters appended to your landing page URLs. It stores these values in a first-party cookie on your domain, which persists across sessions, and then sends them to FUB when the lead submits a form.
This approach handles two common attribution challenges:
- Multi-session journeys. A visitor might click a Facebook ad on Tuesday, browse your listings, leave, then return directly on Friday and submit a form. The Pixel's first-party cookie retains the original Facebook attribution through both sessions, so the lead isn't incorrectly credited to "Direct" on Friday.
- UTM parameter passthrough. When you tag your ad URLs with UTM parameters (
utm_source,utm_medium,utm_campaign), the Pixel reads those parameters and writes them into FUB fields, giving you campaign-level attribution alongside channel-level attribution. - Referring domain capture. For leads who arrive from organic search, social shares, or referral links without UTM tags, the Pixel captures the referring domain (e.g.,
google.comorfacebook.com) and uses that for source attribution.
The result is that each lead entering FUB from your website carries structured source data rather than a generic label — which becomes the foundation for meaningful attribution reporting.
How do you install the Follow Up Boss Pixel?
Installing the Pixel is a straightforward process that doesn't require a developer. The steps below cover the standard installation for any website where you control the HTML. If your website is on a platform like Squarespace, WordPress, or a managed IDX provider, the platform may offer a dedicated header code injection field — the process is the same; just paste into that field instead of editing HTML directly.
- Retrieve your Pixel code from FUB. In Follow Up Boss, navigate to Settings > Pixel. Your account's unique Pixel snippet will be displayed there. Copy the full JavaScript block.
- Paste the snippet into your website's
<head>section. The Pixel should load on every page of your site, not just the lead capture pages. This ensures the Pixel is present to capture the referring URL when a visitor first arrives, even if they browse multiple pages before submitting a form. - Verify the Pixel is firing. After installing, submit a test lead through one of your forms. Wait a few minutes, then check the new contact record in Follow Up Boss. The Lead Source field should reflect your test session's traffic source (or "Direct" if you navigated directly to the page).
- Confirm attribution appears in FUB's Lead Source Report. Go to Reports > Lead Sources in FUB and confirm your test lead appears with a populated source. If the field is blank, double-check that the Pixel snippet is in the
<head>of the page (not the footer) and that no content security policy is blocking it. - Tag your ad URLs with UTM parameters. The Pixel captures UTMs automatically, but only if they are present in the URL. For any paid campaigns, use a UTM builder to append
utm_source,utm_medium, andutm_campaignto your destination URLs before launching ads. This is what enables campaign-level breakdown inside FUB, beyond just channel.
For detailed configuration options specific to your website platform, refer to the official Follow Up Boss Help Center at followupboss.com. Pixel availability may vary by FUB plan tier.
What attribution data does the Pixel capture?
Once installed, the Pixel populates several fields in Follow Up Boss that are available for filtering, reporting, and smart list creation. The table below summarizes the primary data types the Pixel captures and how each one is used inside FUB.
| Attribution data type | What the Pixel captures | How to use it in FUB |
|---|---|---|
| Lead Source | Referring domain or UTM source value (e.g., Google, Facebook, Zillow) | Filter the Lead Source Report to compare volume and stage distribution by channel |
| Source URL | The specific page or ad URL the visitor arrived from | Identify which landing pages or listing pages drive the most qualified leads |
| UTM Campaign | Value of the utm_campaign parameter in the URL |
Track specific ad campaigns and compare lead quality across campaign names |
| UTM Medium | Value of the utm_medium parameter (e.g., cpc, email, social) |
Distinguish paid vs. organic vs. email-driven lead flows at a channel level |
| UTM Content | Value of the utm_content parameter (e.g., ad creative or link label) |
A/B test ad creative or email link placement by comparing conversion rates per content value |
| Form / Page URL | The page on your site where the lead form was submitted | Identify which property pages or IDX search pages convert visitors into leads |
All of these fields are populated automatically at the moment of lead capture. Once they appear on a contact record in FUB, they behave like any other field — you can filter smart lists on them, include them in bulk exports, and use them in FUB's native Lead Source Report.
How do you use Pixel data to improve ROI?
Attribution data is only valuable when it changes a decision. The most actionable use of Pixel data in FUB is comparing lead sources not just on volume, but on quality — specifically, how far leads from each source typically progress through the pipeline before stalling or converting.
Here are four concrete ways to turn Pixel attribution data into marketing decisions:
- Compare stage progression by source. In FUB's Lead Source Report, examine where contacts from each source tend to stall. If Google Ads leads consistently reach "Active Buyer" stage while Facebook leads cluster in "New Lead" and never advance, that's a meaningful signal about lead intent — not just lead count.
- Build source-specific smart lists. Create a smart list filtered to a single source (e.g.,
Lead Source = Google / Organic) and sort by pipeline stage. Reviewing this list weekly tells you whether your SEO investment is producing contacts who actually engage, not just contacts who fill out forms. - Use UTM campaign data to evaluate individual ad campaigns. If you are running multiple Google Ad campaigns simultaneously, tagging each with a distinct
utm_campaignvalue lets you filter FUB contacts by campaign and compare how far each campaign's leads progress. This is a more direct measure of campaign ROI than cost-per-click data from the ad platform. - Identify your highest-converting landing pages. The form page URL captured by the Pixel tells you which pages on your site are producing the most leads. Cross-reference that with stage progression to find pages that produce not just volume but qualified leads — then invest in driving more traffic to those pages specifically.
The discipline here is closing the loop: the Pixel captures the source, FUB tracks the outcome, and your job is to regularly compare the two. A monthly review of the Lead Source Report — sorted by contacts who reached "Under Contract" or "Closed" — is the most efficient way to maintain that loop without drowning in data.
How does Follow Up Ace complement Pixel attribution data?
The Pixel answers "where did this lead come from?" Follow Up Ace answers "how is this lead behaving now that they're in FUB?" These are two distinct questions, and together they give you a much more complete picture than either provides alone.
Specifically, Ace adds behavioral intelligence that the Pixel cannot capture — because the Pixel's job ends the moment a lead is created. After that, what matters is what the contact does: do they respond to outreach, what channel do they prefer, is their engagement accelerating or fading?
Ace addresses those questions by writing three fields back to every contact's FUB record nightly, available on all plan tiers including free:
- Ace Score (0–100). An overall engagement score that reflects how actively the contact has been engaging across all communication channels. A high score on a lead attributed to a new Google Ad campaign is evidence that the campaign is producing genuinely interested prospects, not just form fills.
- Ace Tier (Hot / Warm / Cool / Cold / Dormant). A five-tier classification derived from the Ace Score, designed for quick prioritization. Filtering your Google Ads leads by Ace Tier lets you see whether that channel is producing Hot or Warm contacts at a higher rate than other sources — a more useful signal than raw lead count.
- Ace Preferred Channel. The communication channel (call, text, email) where the contact has been most responsive. When you know a lead's preferred channel, follow-up from that source is more likely to get a reply — regardless of how the lead originally arrived via the Pixel.
A practical workflow that combines both tools: use a FUB smart list filtered on Lead Source = [your top channel] and then sort by Ace Tier descending. The result is your highest-intent leads from your best-performing source — the exact contacts that most deserve your time this week. This combination is something neither the Pixel alone nor Ace alone can produce.
For teams using the Ace Trove, source-level behavioral patterns become part of the input for lead nurture recommendations. The lead-nurture-optimizer tool, for example, factors in a contact's Ace Preferred Channel when suggesting the next best outreach action — so your follow-up strategy adapts to the individual, not just the source segment.
Ace does not have its own tracking pixel and does not capture lead source data independently. Its role is purely post-capture: once a contact is in FUB — regardless of how they got there — Ace layers behavioral scoring on top of the record. Think of the Pixel as the front door and Ace as the intelligence layer that runs inside the house after the visitor walks in.
For a broader look at how AI scoring integrates with FUB's reporting tools, the Guides section covers smart list strategies and how to combine attribution fields with behavioral scores in your daily workflow.
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