Split a large ad group in Google Ads

What it flagsToo many keywords in one ad group

An ad group works best when the keywords are closely related: then the ad text can closely match the search query. If too much ends up in one group and the keywords span very different themes, no single ad can match all of them well.

AdBuilder checks your active search campaigns and counts the number of unique keyword texts per ad group. If it finds a group with more than 20 unique texts, that's the signal that the group has become too broad and would benefit from being split by theme.

Why it mattersWhy keyword count per ad group matters

Google rewards relevance. The better your ad matches the keyword and the landing page, the higher your Quality Score and the lower your CPC at the same position. One generic ad covering dozens of different keywords performs mediocrely for each keyword, because the text is never specific enough.

If you split a large group like this into smaller, tightly themed ad groups, each group can get its own targeted ad. That boosts relevance and Quality Score and lowers CPC. It also gives you a clearer overview: you can see per theme what's working and adjust more precisely.

How it worksHow AdBuilder finds the large ad group

AdBuilder only looks at active search campaigns, and within them, at active, non-negative keywords in active ad groups. For each group, it counts the unique keyword texts, ignoring capitalization and extra spaces. Different match types of the same text count as one theme candidate, so 8 keywords across three match types are 24 criteria but count as 8 unique texts.

The recommendation appears as soon as a group has more than 20 unique keyword texts (so 21 or more). If there are multiple candidates, AdBuilder only picks the largest group per run. There's no time window and no conversion requirement: this is a structure check on the current setup, not on performance.

Groups you've already split with this recommendation before (the source group and the newly created groups) are skipped, so you don't get a freshly restructured setup suggested again. If you dismissed the recommendation, AdBuilder leaves that group alone.

• Source: keyword_view, active search campaigns and active ad groups only
• Threshold: more than 20 unique keyword texts in one group
• Unique = normalized text; match type variants of the same text count once
• Only the largest qualifying group is flagged per run
• No lookback window and no conversion gate: it's a structural signal

What you can doSplit the ad group by theme

In the recommendation, you cluster the keywords by theme. AdBuilder pulls the landing page from an existing ad in the group as a starting point; if there isn't one, you enter a destination URL yourself. You decide the names of the new groups, which keywords go where, and the ad text per group.

When applied, AdBuilder creates a new ad group per cluster in the same campaign, with the moved keywords (match type is preserved) and one ad. The moved keywords are paused in the original group, not deleted. That only happens once the new group has both the keywords and a working ad live, so a keyword is never left stranded without a replacement.

The action is reversible. If you undo it, AdBuilder removes the newly created groups and reactivates the original keywords.

• You decide the clusters, group names and ad text
• Match type of each keyword is preserved when moving
• Original keywords are paused, not deleted
• Fully reversible: new groups removed, originals reactivated