Google Display Ad Sizes 2026: Complete Specification Guide
The recommended image size for Google responsive display ads is 1200x628 pixels (landscape) and 1200x1200 pixels (square).
Google Display Network reaches over 35 million websites and apps. This guide covers all official Google Ads image specifications for 2026, including responsive display ads and standard banner sizes.
Resize Images for Google AdsResponsive Display Ads (Required Formats)
According to Google's 2026 Ads specifications, responsive display ads require at least one landscape (1.91:1) and one square (1:1) image. Google recommends uploading at 1200 pixels on the longest side for best quality.
1200 x 628
Aspect ratio: 1.91:1
1200 x 1200
Aspect ratio: 1:1
Standard Banner Sizes (IAB Compliant)
These are the most common Google Display Network banner sizes, compliant with IAB (Interactive Advertising Bureau) standards. The 300x250 Medium Rectangle is the most widely supported ad unit globally.
300 x 250
Aspect ratio: 6:5
728 x 90
Aspect ratio: 8:1
300 x 600
Aspect ratio: 1:2
970 x 250
Aspect ratio: 3.88:1
336 x 280
Aspect ratio: 6:5
160 x 600
Aspect ratio: 4:15
Mobile Ad Sizes
Mobile ads account for over 60% of Google Display Network impressions. The 320x50 Mobile Leaderboard is the standard mobile banner format.
320 x 50
Aspect ratio: 32:5
320 x 100
Aspect ratio: 16:5
Google Display Ads Best Practices
Google requires a minimum image resolution of 600x314 for landscape and 300x300 for square, but recommends 1200px on the longest side for optimal display quality.
Keep important content at least 10% away from image edges to account for automatic cropping on different placements.
According to Google's 2026 ad policies, images with minimal text overlay perform better. Avoid placing text over more than 20% of the image.
Google's machine learning optimizes ad delivery based on image quality. High-contrast, clear images receive more impressions.
Responsive display ads using both landscape and square formats receive up to 50% more impressions than single-format campaigns.
Maximum file size for Google Display ads is 150KB. Use JPG format at 80-90% quality for the best balance of quality and file size.
Technical Specifications
Supported formats: JPG, PNG, GIF (static and animated)
Maximum file size: 150KB per image
Animated GIF limits: Maximum 30 seconds duration, 5 frames per second
Color profile: sRGB recommended for consistent display
Landscape image: Minimum 600x314 pixels, recommended 1200x628 pixels
Square image: Minimum 300x300 pixels, recommended 1200x1200 pixels
Logo (square): Minimum 128x128 pixels, recommended 1200x1200 pixels
Logo (landscape): Minimum 512x128 pixels, recommended 1200x300 pixels
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