What aspect ratio does Outbrain Banner use?

Outbrain Banner supports 1.2:1, 4:15, and 8.09:1 aspect ratios.

What is the maximum file size for Outbrain Banner?

Files for Outbrain Banner can be up to 2.5 MB.

Which file formats does Outbrain Banner accept?

Outbrain Banner accepts PNG and JPG files.

How does Outbrain Banner compare to other Outbrain ad formats?

Outbrain Banner differs from other Outbrain placements in its dimensions, and a 2.5MB file ceiling. Compare side-by-side from the Outbrain publisher page on All Ad Specs.

Where can I find the official Outbrain Banner documentation?

The official source for Outbrain Banner requirements is https://www.outbrain.com/help/ads-specs/#banner, linked from this page.

Are these Outbrain Banner specs kept up to date?

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

Outbrain Banner ad specs

Outbrain Banner ads are 1.2:1 still images, up to 2.5 MB per file, delivered as PNG or JPG. They run in the Standard Display — IAB-standard banner placements across the Outbrain network (programmatic) placement on Outbrain. Use these requirements to brief designers, validate uploads, and avoid creative rejections in Outbrain's ad manager.

Aspect ratio: 1.2:1, 4:15, 8.09:1
Max file size: 2.5 MB
File types: PNG, JPG

Visual specifications

Aspect ratios	1.2:1, 4:15, 8.09:1
Orientation	any
Max file size	2.5 MB
File types	PNG, JPG

Notes & source

Supported format sizes: 300×250 (Medium Rectangle), 160×600 (Wide Skyscraper) and 728×90 (Leaderboard). Image format: PNG or JPG. Main image weight up to 2.5 MB. Best for awareness. Devices: all.

Official source: https://www.outbrain.com/help/ads-specs/#banner

Frequently asked questions

What aspect ratio does Outbrain Banner use?: Outbrain Banner supports 1.2:1, 4:15, and 8.09:1 aspect ratios.
What is the maximum file size for Outbrain Banner?: Files for Outbrain Banner can be up to 2.5 MB.
Which file formats does Outbrain Banner accept?: Outbrain Banner accepts PNG and JPG files.
What is the Outbrain Banner ad format?: Outbrain Banner is a image ad format that runs in the Standard Display — IAB-standard banner placements across the Outbrain network (programmatic) placement on Outbrain. This page documents its full creative requirements, sourced from Outbrain's official ad documentation.
Where does Outbrain Banner appear on Outbrain?: Outbrain Banner ads appear in the Standard Display — IAB-standard banner placements across the Outbrain network (programmatic) placement on Outbrain.
How does Outbrain Banner compare to other Outbrain ad formats?: Outbrain Banner differs from other Outbrain placements in its dimensions, and a 2.5MB file ceiling. Compare side-by-side from the Outbrain publisher page on All Ad Specs.
Where can I find the official Outbrain Banner documentation?: The official source for Outbrain Banner requirements is https://www.outbrain.com/help/ads-specs/#banner, linked from this page.
Are these Outbrain Banner specs kept up to date?: Yes — every spec entry references Outbrain's official documentation source so dimensions, file size limits, and codec requirements stay in sync as the platform changes.