What size are Mozilla Ads Leaderboard ads?

Mozilla Ads Leaderboard ads are 728×90 pixels with an aspect ratio of 728:90.

What aspect ratio does Mozilla Ads Leaderboard use?

Mozilla Ads Leaderboard supports 728:90 aspect ratio.

Which file formats does Mozilla Ads Leaderboard accept?

Mozilla Ads Leaderboard accepts JPG and PNG files.

Where does Mozilla Ads Leaderboard appear on Mozilla Ads?

Mozilla Ads Leaderboard ads appear in the New Tab placement on Mozilla Ads.

Where can I find the official Mozilla Ads Leaderboard documentation?

The official source for Mozilla Ads Leaderboard requirements is https://www.mozilla.org/en-US/advertising/solutions/, linked from this page.

Are these Mozilla Ads Leaderboard specs kept up to date?

Yes — every spec entry references Mozilla Ads'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 Mozilla Ads placements?

Often partially — many Mozilla Ads 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.

Mozilla Ads Leaderboard ad specs

Mozilla Ads Leaderboard ads are horizontal 728:90 still images, measured at 728×90 px, delivered as JPG or PNG. They run in the New Tab placement on Mozilla Ads. Use these requirements to brief designers, validate uploads, and avoid creative rejections in Mozilla Ads's ad manager.

Dimensions: 728×90 px
Aspect ratio: 728:90
File types: JPG, PNG

Visual specifications

Dimensions	728 × 90 px
Aspect ratios	728:90
Orientation	landscape
File types	JPG, PNG

Notes & source

IAB standard 728×90 leaderboard on the Firefox New Tab page.

Official source: https://www.mozilla.org/en-US/advertising/solutions/

Frequently asked questions

What size are Mozilla Ads Leaderboard ads?: Mozilla Ads Leaderboard ads are 728×90 pixels with an aspect ratio of 728:90.
What aspect ratio does Mozilla Ads Leaderboard use?: Mozilla Ads Leaderboard supports 728:90 aspect ratio.
Which file formats does Mozilla Ads Leaderboard accept?: Mozilla Ads Leaderboard accepts JPG and PNG files.
Where does Mozilla Ads Leaderboard appear on Mozilla Ads?: Mozilla Ads Leaderboard ads appear in the New Tab placement on Mozilla Ads.
Where can I find the official Mozilla Ads Leaderboard documentation?: The official source for Mozilla Ads Leaderboard requirements is https://www.mozilla.org/en-US/advertising/solutions/, linked from this page.
Are these Mozilla Ads Leaderboard specs kept up to date?: Yes — every spec entry references Mozilla Ads'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 Mozilla Ads placements?: Often partially — many Mozilla Ads 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.