What size are IAB Standards Mobile Banner ads?

IAB Standards Mobile Banner ads are 320×50 pixels with an aspect ratio of 32:5.

What aspect ratio does IAB Standards Mobile Banner use?

IAB Standards Mobile Banner supports 32:5 aspect ratio.

What is the maximum file size for IAB Standards Mobile Banner?

Files for IAB Standards Mobile Banner can be up to 0.2 MB.

Which file formats does IAB Standards Mobile Banner accept?

IAB Standards Mobile Banner accepts JPG, PNG, GIF, and HTML files.

Where does IAB Standards Mobile Banner appear on IAB Standards?

IAB Standards Mobile Banner ads appear in the Top or bottom of mobile viewport placement on IAB Standards.

Where can I find the official IAB Standards Mobile Banner documentation?

The official source for IAB Standards Mobile Banner requirements is https://iabtechlab.com/standards/ad-portfolio/, linked from this page.

Are these IAB Standards Mobile Banner specs kept up to date?

Yes — every spec entry references IAB Standards's official documentation source so dimensions, file size limits, and codec requirements stay in sync as the platform changes.

Can I reuse the same creative for other IAB Standards placements?

Often partially — many IAB Standards placements share aspect ratios but differ in safe zones, duration, or file size. Always cross-check the target placement's spec page before reusing creative.

IAB Standards Mobile Banner ad specs

IAB Standards Mobile Banner ads are horizontal 32:5 still images, measured at 320×50 px, up to 0.2 MB per file, delivered as JPG, PNG, GIF, or HTML. They run in the Top or bottom of mobile viewport placement on IAB Standards. Use these requirements to brief designers, validate uploads, and avoid creative rejections in IAB Standards's ad manager.

Dimensions: 320×50 px
Aspect ratio: 32:5
Max file size: 0.2 MB

Visual specifications

Dimensions	320 × 50 px
Aspect ratios	32:5
Orientation	landscape
Max file size	0.2 MB
File types	JPG, PNG, GIF, HTML

Notes & source

Standard mobile banner unit. Max initial load 200 KB. Must render correctly on both iOS and Android mobile browsers.

Official source: https://iabtechlab.com/standards/ad-portfolio/

Frequently asked questions

What size are IAB Standards Mobile Banner ads?: IAB Standards Mobile Banner ads are 320×50 pixels with an aspect ratio of 32:5.
What aspect ratio does IAB Standards Mobile Banner use?: IAB Standards Mobile Banner supports 32:5 aspect ratio.
What is the maximum file size for IAB Standards Mobile Banner?: Files for IAB Standards Mobile Banner can be up to 0.2 MB.
Which file formats does IAB Standards Mobile Banner accept?: IAB Standards Mobile Banner accepts JPG, PNG, GIF, and HTML files.
Where does IAB Standards Mobile Banner appear on IAB Standards?: IAB Standards Mobile Banner ads appear in the Top or bottom of mobile viewport placement on IAB Standards.
Where can I find the official IAB Standards Mobile Banner documentation?: The official source for IAB Standards Mobile Banner requirements is https://iabtechlab.com/standards/ad-portfolio/, linked from this page.
Are these IAB Standards Mobile Banner specs kept up to date?: Yes — every spec entry references IAB Standards's official documentation source so dimensions, file size limits, and codec requirements stay in sync as the platform changes.
Can I reuse the same creative for other IAB Standards placements?: Often partially — many IAB Standards placements share aspect ratios but differ in safe zones, duration, or file size. Always cross-check the target placement's spec page before reusing creative.