What size are The Trade Desk Expandable — 300×250 → 500×250 (Left) ads?

The Trade Desk Expandable — 300×250 → 500×250 (Left) ads are 300×250 pixels with an aspect ratio of 6:5.

What aspect ratio does The Trade Desk Expandable — 300×250 → 500×250 (Left) use?

The Trade Desk Expandable — 300×250 → 500×250 (Left) supports 6:5 aspect ratio.

Which file formats does The Trade Desk Expandable — 300×250 → 500×250 (Left) accept?

The Trade Desk Expandable — 300×250 → 500×250 (Left) accepts HTML and JS files.

What is the The Trade Desk Expandable — 300×250 → 500×250 (Left) ad format?

The Trade Desk Expandable — 300×250 → 500×250 (Left) is a image ad format that runs in the Expandable / Rich Media placement on The Trade Desk. This page documents its full creative requirements, sourced from The Trade Desk's official ad documentation.

Where does The Trade Desk Expandable — 300×250 → 500×250 (Left) appear on The Trade Desk?

The Trade Desk Expandable — 300×250 → 500×250 (Left) ads appear in the Expandable / Rich Media placement on The Trade Desk.

How does The Trade Desk Expandable — 300×250 → 500×250 (Left) compare to other The Trade Desk ad formats?

The Trade Desk Expandable — 300×250 → 500×250 (Left) differs from other The Trade Desk placements in its 300×250px canvas. Compare side-by-side from the The Trade Desk publisher page on All Ad Specs.

Where can I find the official The Trade Desk Expandable — 300×250 → 500×250 (Left) documentation?

The official source for The Trade Desk Expandable — 300×250 → 500×250 (Left) requirements is https://www.thetradedesk.com/assets/global/documents/Creative_Specifications-en.pdf, linked from this page.

Are these The Trade Desk Expandable — 300×250 → 500×250 (Left) specs kept up to date?

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

The Trade Desk Expandable — 300×250 → 500×250 (Left) ad specs

The Trade Desk Expandable — 300×250 → 500×250 (Left) ads are horizontal 6:5 still images, measured at 300×250 px, delivered as HTML or JS. They run in the Expandable / Rich Media placement on The Trade Desk. Use these requirements to brief designers, validate uploads, and avoid creative rejections in The Trade Desk's ad manager.

Dimensions: 300×250 px
Aspect ratio: 6:5
File types: HTML, JS

Visual specifications

Dimensions	300 × 250 px
Aspect ratios	6:5
Orientation	landscape
File types	HTML, JS

Notes & source

Expandables must be uploaded as third-party tags — The Trade Desk does not directly host expandables. Specify expansion directions on upload (OR statement).

Official source: https://www.thetradedesk.com/assets/global/documents/Creative_Specifications-en.pdf

Frequently asked questions

What size are The Trade Desk Expandable — 300×250 → 500×250 (Left) ads?: The Trade Desk Expandable — 300×250 → 500×250 (Left) ads are 300×250 pixels with an aspect ratio of 6:5.
What aspect ratio does The Trade Desk Expandable — 300×250 → 500×250 (Left) use?: The Trade Desk Expandable — 300×250 → 500×250 (Left) supports 6:5 aspect ratio.
Which file formats does The Trade Desk Expandable — 300×250 → 500×250 (Left) accept?: The Trade Desk Expandable — 300×250 → 500×250 (Left) accepts HTML and JS files.
What is the The Trade Desk Expandable — 300×250 → 500×250 (Left) ad format?: The Trade Desk Expandable — 300×250 → 500×250 (Left) is a image ad format that runs in the Expandable / Rich Media placement on The Trade Desk. This page documents its full creative requirements, sourced from The Trade Desk's official ad documentation.
Where does The Trade Desk Expandable — 300×250 → 500×250 (Left) appear on The Trade Desk?: The Trade Desk Expandable — 300×250 → 500×250 (Left) ads appear in the Expandable / Rich Media placement on The Trade Desk.
How does The Trade Desk Expandable — 300×250 → 500×250 (Left) compare to other The Trade Desk ad formats?: The Trade Desk Expandable — 300×250 → 500×250 (Left) differs from other The Trade Desk placements in its 300×250px canvas. Compare side-by-side from the The Trade Desk publisher page on All Ad Specs.
Where can I find the official The Trade Desk Expandable — 300×250 → 500×250 (Left) documentation?: The official source for The Trade Desk Expandable — 300×250 → 500×250 (Left) requirements is https://www.thetradedesk.com/assets/global/documents/Creative_Specifications-en.pdf, linked from this page.
Are these The Trade Desk Expandable — 300×250 → 500×250 (Left) specs kept up to date?: Yes — every spec entry references The Trade Desk's official documentation source so dimensions, file size limits, and codec requirements stay in sync as the platform changes.