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What are the Best Banner Sizes for Your Website?


Screen on a laptop with the text "Join us online"

Banner ads are one of the most common and effective ways to monetize your website. However, not all banner sizes are equally effective. Some banner sizes perform better than others, depending on various factors such as their placement, design, and targeting.


The Most Effective Banner Sizes

A study by Adform revealed the following banner sizes as the most effective:

  • Medium Rectangle (300x250)

  • Leaderboard (728x90)

  • Wide Skyscraper (160x600)

  • Banner (468x60)

  • Skyscraper (120x600)

  • Rectangle (180x150)

  • Micro Bar (88x31)

  • Half-Page (300x600)

  • Mobile Leaderboard (320x50) (Common but not always practical)


While these sizes are considered high-performing, success depends on more than size. Your ads' relevance, attractiveness, and call-to-action (CTA) are crucial for effectiveness.


My Experience with Banner Ads

In my experience, the most effective banner sizes for the websites I work with are:

  • 468x60 (Banner)

  • 300x250 (Medium Rectangle)

  • 728x90 (Leaderboard)


These banner sizes tend to receive more clicks and conversions than others.


On the other hand, the least effective banner sizes I've encountered are:

  • 120x600 (Skyscraper)

  • 180x150 (Rectangle)

  • 320x50 (Mobile Leaderboard)


The Challenge with 320x50 (Mobile Leaderboard)

The 320x50 banner size is particularly challenging for mobile websites. It requires high traffic volumes to generate significant clicks and revenue. Unless your website receives millions of views, I don’t recommend relying on this banner size for monetization.


Instead, more prominent mobile-friendly ads, such as 300x250 (Medium Rectangle), tend to perform better. These ads provide greater visibility and better user engagement while maintaining a smooth user experience.


The Role of Interstitial Ads

In addition to banner ads, you can also use interstitial ads, which cover the entire screen. These ads are more engaging and can drive higher revenue. However, be cautious:


  • Too many interstitial ads can annoy users and increase bounce rates.

  • Always allow users to quickly close the ad and return to their content.

  • Google penalizes intrusive ads, so they must be ensured to comply with Google’s ad experience guidelines.


Banner sizes matter when it comes to website performance and profitability. However, they are not the only factor determining the success of your banner ads. Placement, design, and targeting are equally important.


The best banner sizes for your website will vary depending on your niche, audience, and goals. Always test different banner sizes and measure their performance to find the optimal combination for your site. You can maximize engagement and revenue without compromising user experience by focusing on high-performing sizes and user-friendly ad formats.

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About the author

Oleh Nesterenko is a seasoned marketing professional with over 10 years of experience in multi-channel marketing and web analytics. He specializes in Google Analytics, Google Tag Manager, creative design, and marketing campaign coordination, helping businesses optimize their digital strategies through data-driven insights. With a passion for performance marketing and UX optimization, Oleh combines expertise with creative problem-solving to drive measurable results.

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