Resize to 320×50 (Mobile Banner)

Create Mobile Banner ad banners at 320×50 pixels — standard IAB display ad size.

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PNG, JPG, WebP, BMP — any size, mochi handles it all

Resized Image
Result
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File Size
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Image too small? Sharpen first

If your image is smaller than the target size, use Sharpen for better clarity, then resize.

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Compress Image for Google Ads →Resize to 300×250 Medium Rectangle →Compress Image Under 150KB →
Type Dimensions Ratio
Ad Size320×50 px
IAB NameMobile Banner
PlacementMobile website ads
Max File Size150KB (Google Ads)

Frequently Asked Questions

What is a 320×50 Mobile Banner ad?
The Mobile Banner (320×50) is one of the most popular IAB standard ad sizes. It's commonly used for mobile website ads and is supported by all major ad networks.
What file size should display ads be?
Google Ads requires display ads under 150KB. Most ad networks have similar limits. Use JPEG at 70-80% quality or optimized PNG for text-heavy ads.
What format is best for banner ads?
Use JPEG for photo-based ads, PNG for graphics with text and sharp edges, and GIF or HTML5 for animated ads. Keep file sizes under 150KB.