Mozilla Ads ad specs

Mozilla Ads supports 8 documented ad formats across the Browser / Developer category. Browse the full list of placements, dimensions, file size limits, and creative requirements for advertising on Mozilla Ads. Sponsored Tiles, native content cards and IAB display units across Firefox New Tab and MDN Web Docs.

Frequently asked questions

What is Mozilla Ads?
Mozilla Ads is a Browser / Developer platform that supports 8 documented ad formats on All Ad Specs.
How many ad formats does Mozilla Ads support?
Mozilla Ads currently has 8 documented ad formats in this directory, each with full dimensions, file size limits, and codec requirements.
What kind of platform is Mozilla Ads?
Mozilla Ads is part of the Browser / Developer category. See the format list above for placements where ads can run.
How does Mozilla Ads compare to other publishers in this directory?
Each publisher has its own catalog of ad formats with different dimensions, file size limits, and creative rules. Compare Mozilla Ads's 8 formats against any other publisher in the All Ad Specs directory by browsing their respective pages.
Where can I find Mozilla Ads's official ad spec documentation?
Each format on this page links out to Mozilla Ads's official source. You can also visit https://www.mozilla.org/en-US/advertising/solutions/ for general information.
Are Mozilla Ads ad specs kept up to date?
Yes — every format page references the original publisher source so the dimensions, file size limits, and codec requirements stay in sync.