Optimal WordPress banner ad sizes and page dimensions, such as 728×90 (leaderboard), 300×250 (medium rectangle), and 1920×1080 (site header/banner), depend on the theme and placement. Standardize to 1200×630 for blog images and keep file sizes under 150KB for better performance.
This video explains the importance of choosing the right image sizes for your website:
Common WordPress Banner Dimensions
- Header Banner/Hero Image: 1920×1080 px (wide coverage), 1048×250 px (standard header), or 2880×1500 px.
- Featured Image (Post Thumbnail): 1200×630 px or 1200×900 px.
- Logo Image: 200×100 px.
Standard Ad Sizes (IAB Standards)
- Medium Rectangle: 300×250 px (versatile, works in-content or sidebar).
- Leaderboard: 728×90 px (top of page/above navigation).
- Large Leaderboard/Billboard: 970×90 px or 970×250 px.
- Wide Skyscraper: 160×600 px or 120×600 px.
- Mobile Banner: 300×50 px or 320×50 px.
Best Practices
- File Size: Keep banner files below 150KB to maintain speed.
- Formats: Use PNG for graphics/logos and JPG for photos.
- Mobile Responsiveness: Ensure ads display well on mobile by using smaller, standard sizes like 300×250.
- Customization: Use Settings > Media to define specific image dimensions to prevent awkward cropping.
Learn More, Resources & References
Mastering WordPress Banner Sizes: A Comprehensive Guide to Optimizing Images for Speed, SEO, and Engagement | Cloudinary. (2025, November 23). Cloudinary. https://cloudinary.com/guides/wordpress-plugin/mastering-wordpress-banner-sizes-a-comprehensive-guide-to-optimizing-images-for-speed-seo-and-engagement
Gorham, J. (2023, January 19). WordPress Image Sizes: The Must-Read Guide [2023 Update]. Engine Scout. https://enginescout.com.au/wordpress-image-sizes/
Gotter, A. (2024, November 14). The Best WordPress Featured Image Size & Post Thumbnail Tips. Snappa Blog. https://snappa.com/blog/wordpress-featured-image-size/
Rask, O. (2018, December 5). Top Banner Sizes: The 21 Most Effective Banners 2019. Match2One. https://www.match2one.com/standard-banner-sizes/
The most effective banner ad sizes for online advertising | Webflow Blog. (2025). Webflow. https://webflow.com/blog/banner-ad-sizes
Alba, A. (2025, September 4). Best Website Banner Dimensions for High-Quality Design and Performance – ShortPixel Blog. ShortPixel Blog. https://shortpixel.com/blog/website-banner-dimensions/
https://www.facebook.com/TheWPGuyie. (2024). Banner ads for WordPress websites. The WP Guy. https://www.thewpguy.ie/banner-ads-for-wordpress-websites/
Simplifying Websites. (2023, May 4). Definitive Guide to IMAGE SIZES for WordPress and Elementor Websites [Never Get It Wrong Again!]. YouTube. https://www.youtube.com/watch?v=5-zhZBUMvk4
Chisom Maduonuorah. (2024, November 21). 8 Common Banner Ad Sizes for 2026. Adsterra Affiliate Marketing and Traffic Monetization Blog. https://adsterra.com/blog/standard-banner-ad-sizes/
https://www.monetizemore.com/blog/most-common-banner-ads-sizes/
https://www.facebook.com/zapowell01. (2023, October 5). Optimize WordPress Header Images Using 5 Best Tips. ShortPixel Blog. https://shortpixel.com/blog/wordpress-header-image/