Outbrain Carousel ad specs

Outbrain Carousel ads are square 1:1 still images, measured at 1200×1200 px, up to 2.5 MB per file, delivered as JPG or PNG. They run in the Native — In the Feed (managed only) placement on Outbrain. Use these requirements to brief designers, validate uploads, and avoid creative rejections in Outbrain's ad manager.

Visual specifications

Dimensions1200 × 1200 px
Aspect ratios1:1
Orientationsquare
Max file size2.5 MB
File typesJPG, PNG

Copy limits

Headline60 chars

Notes & source

Card image: JPG or PNG, 1:1 ratio, min 300px, max 1200px, up to 2.5 MB per image (GIF/MP4 cards up to 30 MB). 3 cards minimum, 10 maximum. Main title up to 100 characters (60 recommended). Card title up to 100 characters. Brand name up to 60 characters. Brand logo 1:1 ratio, min 40px, max 400px. CTA selected from a dropdown list of 20+ options. Card URL is mandatory. Best for consideration and performance. Devices: all.

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

Frequently asked questions

What size are Outbrain Carousel ads?
Outbrain Carousel ads are 1200×1200 pixels with an aspect ratio of 1:1.
What aspect ratio does Outbrain Carousel use?
Outbrain Carousel supports 1:1 aspect ratio.
What is the maximum file size for Outbrain Carousel?
Files for Outbrain Carousel can be up to 2.5 MB.
Which file formats does Outbrain Carousel accept?
Outbrain Carousel accepts JPG and PNG files.
What are the copy limits for Outbrain Carousel?
Outbrain Carousel copy is limited to 60-character headlines.
What is the Outbrain Carousel ad format?
Outbrain Carousel is a image ad format that runs in the Native — In the Feed (managed only) placement on Outbrain. This page documents its full creative requirements, sourced from Outbrain's official ad documentation.
Where does Outbrain Carousel appear on Outbrain?
Outbrain Carousel ads appear in the Native — In the Feed (managed only) placement on Outbrain.
How does Outbrain Carousel compare to other Outbrain ad formats?
Outbrain Carousel differs from other Outbrain placements in its 1200×1200px canvas, and a 2.5MB file ceiling. Compare side-by-side from the Outbrain publisher page on All Ad Specs.