What is Display Search in Google Analytics?

Ever look at your Google Analytics traffic report, see a big chunk of visitors filed under "Display" or "Other," and have no idea what it means? You're not alone. These vague channel names can be confusing, making it tough to know which marketing efforts are actually bringing people to your site.

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This article will clear things up. We’ll break down exactly what the "Display" channel is, explain why traffic often gets dumped into the mysterious "Other" category, and give you practical steps to properly classify your campaigns for more accurate reporting.

What Are Default Channel Groupings?

Before getting into "Display," it helps to understand how Google Analytics sorts your traffic. GA4 automatically organizes incoming visitors into high-level buckets called "Default Channel Groupings." Think of them as sorting folders for your website traffic, making it easier to see where your audience is coming from at a glance.

You’ll typically see a familiar list in your reports:

• Organic Search: Visitors who arrived after searching on Google, Bing, etc., and clicking a standard, unpaid search result.
• Paid Search: Visitors who clicked on a paid ad from a search network, like a Google Ads search campaign.
• Direct: People who typed your website URL directly into their browser or used a bookmark.
• Referral: Visitors who clicked a link to your site from another website (that isn't a search engine or known social media platform).
• Organic Social: People who found you through a link on a social media platform like Facebook, Twitter, or LinkedIn that was not a paid ad.
• Paid Social: Visitors who clicked on a paid ad on a social media platform.
• Email: Traffic from links in your email marketing campaigns.
• Display: This is the big one we're here to talk about.
• Other: This is the catch-all bucket for traffic Google doesn't know how to categorize.

Unpacking the 'Display' Channel

The "Display" channel represents traffic from display advertising campaigns. Unlike search ads, which are text-based and appear on search engine results pages, display ads are visual. They are the banners, images, and video ads you see sprinkled across other websites, apps, and online properties that are part of an ad network like the Google Display Network (GDN).

If you’re running campaigns on the GDN, or similar platforms, the goal is for all that traffic to show up neatly categorized under the "Display" channel in GA4. But how does Google Analytics know where the traffic came from?

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How GA4 Identifies Display Traffic

There's no magic happening behind the scenes. GA4 relies on rules and signals to categorize traffic. For a click to be assigned to the Display channel, it generally has to meet one of these conditions:

• The traffic is coming from a Google Ads account that is linked to your GA4 property, and it's from a campaign on the Google Display Network.
• The destination URL contains UTM parameters that explicitly tell Google what it is. Specifically, GA4 is looking for a medium that contains "display," "banner," or "cpc" (though "cpc" can be tricky if you're also running paid search).
• The source of the traffic matches a list of domains known by Google to be display ad platforms.

Essentially, proper campaign tagging is what makes accurate reporting possible. When your URLs don't have the right information, Google Analytics has to guess, and that's when things end up in the wrong place.

Why Does So Much Traffic End Up in the 'Other' Channel?

The "Other" channel is GA's junk drawer. It's where traffic goes when it doesn't match the rules for any of the other default channels. If you have a huge percentage of traffic categorized as "Other," it's usually a sign that your campaign tracking is inconsistent or incomplete.

Here are the most common reasons why traffic from your display ads (or other campaigns) might be miscategorized as "Other":

1. Missing or Incorrect UTM Parameters: This is the number one cause. If you're running display ads on a network other than Google's and you forget to add UTM parameters to your links, GA4 won't know it's a paid campaign. It will likely appear as "Referral" traffic from the website where the ad was shown. Worse, if your utm_medium is non-standard (e.g., utm_medium=graphic-ad), GA4 won't recognize it as "Display" and will shunt it into "Other."
2. Inconsistent Naming Conventions: One team member uses utm_medium=display while another uses utm_medium=DisplayAd. While both might seem correct, GA4's default rules are quite specific. This lack of standardization can easily lead to data fragmentation and misclassification.
3. Using Unrecognized Ad Networks: Sometimes, you might be advertising on a newer or smaller ad network that Google hasn't yet added to its list of recognized sources. In these cases, even if the traffic comes from a legitimate display platform, it might default to "Other" or "Referral" without proper UTM tagging.

Clean data starts with consistent tracking. When you control the information you send to Google Analytics via UTM tags, you take control of your reporting.

A Step-by-Step Guide to Auditing Your Traffic Sources

If your "Other" channel is overflowing, it's time to do a little detective work. Finding and fixing these issues is straightforward once you know where to look.

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Step 1: Find Where Your Unassigned Traffic Hides

First, pinpoint the exact traffic that's being miscategorized.

1. In your GA4 property, navigate to Reports > Acquisition > Traffic acquisition.
2. The default view shows the Session default channel grouping. Right away, you can see how much of your traffic is falling into "Other."
3. To dig deeper, click the small plus sign (+) next to the primary dimension column header and add a secondary dimension. Choose Traffic source > Session source / medium.

This view is your key to diagnosis. Instead of just seeing "Other," you can now see the specific source / medium combinations that GA4 is putting into that bucket. You might see things like blogsite.com / banner or email_123 / newsletter that don't fit any default rules.

Step 2: Put on Your Detective Hat and Analyze the Data

Look through the Session source / medium combinations under the "Other" channel group. Ask yourself a few questions:

• Do you recognize the Source? Is it a social network, an email campaign, a partner website where you've placed display ads?
• Is the Medium clear? Often, this is where things go wrong. A medium like "campaign_xyz" isn't descriptive enough for GA4's rules. You should be seeing values like "cpc," "email," or "display."
• Are there typos or capitalization inconsistencies? A medium of "Display" (capital 'D') might be treated differently than "display." Stick to lowercase to be safe.

By reviewing this table, you'll quickly spot the patterns of mistagged campaigns that are polluting your reports.

Step 3: Standardize Your Campaign Tracking Going Forward

Once you've identified the problem areas, the fix is to enforce a consistent tracking methodology for all future campaigns. The best way to do this is with UTM parameters and a simple, shared process for your team.

Use Google's Campaign URL Builder: This free tool helps you generate properly formatted URLs with all the necessary tracking parameters. It removes the risk of typos and a lot of the guesswork.

Create a tracking plan - even a simple spreadsheet - that defines your naming conventions, and share it with everyone who creates marketing links. Establish rules like:

• Source (utm_source): The platform sending the traffic (e.g., google, facebook, newsletter, industry-blog).
• Medium (utm_medium): The marketing channel (e.g., cpc, display, social, email). For clarity, use GA's default channel names here! This is the easiest way to ensure things get categorized correctly.
• Campaign (utm_campaign): The name of your specific campaign (e.g., summer-sale-2024, q3-webinar_promo).

A properly tagged display ad link might look like this:

https://www.yourwebsite.com/?utm_source=industry-blog&utm_medium=display&utm_campaign=new-feature-launch

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Going Pro: Setting Up Custom Channel Groupings

For more advanced users, GA4 allows you to create Custom Channel Groupings. This lets you define your OWN rules for categorizing traffic, which can override Google’s defaults and give you reports tailored to your business.

For example, you could create a new channel called "Partner Display Ads" specifically for traffic from certain publishers. To do this, you would:

1. Navigate to Admin > Data settings > Channel groups.
2. Click Create new channel group.
3. Define your new channel. You could create a rule where "Partner Display Ads" is traffic where the Session source exactly matches a list of your specific partner blogs AND the Session medium is "display."

Custom groups provide incredible flexibility, allowing you to create reports that mirror how your unique business operates, beyond the standard definitions.

Final Thoughts

Understanding where your visitors come from is fundamental to making smart marketing decisions. Channels like "Display" and "Other" aren't mysteries once you learn that they are simply a product of the data you feed Google Analytics. By implementing a systematic and consistent UTM tagging process, you can clean up your reporting and get a crystal-clear view of which channels are driving your success.

This process of auditing, tagging, and reporting can feel like a chore, especially when you have to do it across Google Analytics, several ad platforms, your CRM, and more. This is exactly why we created Graphed. We let you connect all of those data sources in a few clicks. Then, you can simply ask questions in plain English like, "Show me a dashboard of ad spend vs. revenue by campaign," and we'll instantly build a real-time report for you - no more manual tracking spreadsheets or endlessly switching between tabs to get the full picture.