Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) ad specs

Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) ads are still images, up to 2 MB per file, delivered as JPG, PNG, or GIF. They run in the Display network across Yahoo properties (web & mobile) placement on Yahoo Advertising. Use these requirements to brief designers, validate uploads, and avoid creative rejections in Yahoo Advertising's ad manager.

Visual specifications

Orientationany
Max file size2 MB
File typesJPG, PNG, GIF

Notes & source

Retina Assets: Recommended

Official source: https://adspecs.yahooinc.com/format/dsp-thirdpartysupply-mobile-interstitial

Frequently asked questions

What is the maximum file size for Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply)?
Files for Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) can be up to 2 MB.
Which file formats does Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) accept?
Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) accepts JPG, PNG, and GIF files.
What is the Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) ad format?
Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) is a image ad format that runs in the Display network across Yahoo properties (web & mobile) placement on Yahoo Advertising. This page documents its full creative requirements, sourced from Yahoo Advertising's official ad documentation.
Where does Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) appear on Yahoo Advertising?
Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) ads appear in the Display network across Yahoo properties (web & mobile) placement on Yahoo Advertising.
How does Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) compare to other Yahoo Advertising ad formats?
Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) differs from other Yahoo Advertising placements in its dimensions, and a 2MB file ceiling. Compare side-by-side from the Yahoo Advertising publisher page on All Ad Specs.
Where can I find the official Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) documentation?
The official source for Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) requirements is https://adspecs.yahooinc.com/format/dsp-thirdpartysupply-mobile-interstitial, linked from this page.
Are these Yahoo Advertising 320x480 Mobile Interstitial (3rd party supply) specs kept up to date?
Yes — every spec entry references Yahoo Advertising'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 Yahoo Advertising placements?
Often partially — many Yahoo Advertising 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.