IAB Standards ad specs

IAB Standards supports 25 documented ad formats across the Industry Standards category. Browse the full list of placements, dimensions, file size limits, and creative requirements for advertising on IAB Standards. Canonical cross-platform display, video, native, audio, DOOH and CTV ad unit specifications published by IAB Tech Lab.

Frequently asked questions

What is IAB Standards?
IAB Standards is a Industry Standards platform that supports 25 documented ad formats on All Ad Specs.
How many ad formats does IAB Standards support?
IAB Standards currently has 25 documented ad formats in this directory, each with full dimensions, file size limits, and codec requirements.
What kind of platform is IAB Standards?
IAB Standards is part of the Industry Standards category. See the format list above for placements where ads can run.
How does IAB Standards 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 IAB Standards's 25 formats against any other publisher in the All Ad Specs directory by browsing their respective pages.
Where can I find IAB Standards's official ad spec documentation?
Each format on this page links out to IAB Standards's official source. You can also visit https://iabtechlab.com/standards/ad-portfolio/ for general information.
Are IAB Standards 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.