You can use Display Planner to:

You can use Display Planner to see ways to reach your target audience based on your keywords, website, or interest categories when you need to research and scale your Google Display Network campaigns. Mechanically, the tool functions by analyzing your specific business inputs—such as your landing page URL, product keywords, or customer interests—to generate data-driven targeting ideas. It identifies relevant placements, topics, and demographics that align with your brand, providing estimates for reach and historical costs. This allows advertisers to move beyond guesswork, using the Display Network's vast data to find high-potential segments they might have missed. By leveraging these insights, you can build a strategy that places your ads on websites and apps where your ideal customers are already active. Ultimately, the tool acts as a roadmap for campaign expansion, ensuring your budget is allocated toward the interest categories and keywords most likely to drive engagement and conversions.