Adsterra — Native Banner Unit — Rendered Block (Medium Rectangle)

Display banner · Native · Verified 2026-07

Live preview

300×250
shown at 100%

In context

On a web page

Full specification

Size (px)
Ratio6:5
Max weight350 KB
FormatsJPG, PNG
Text limits
Title 64 chars

Notes & best practice

On publisher pages, native banners render by default as a block of 3 to 4 snippets, each containing a title and an image scaled to roughly 300x250 pixels.

Blocks can be arranged horizontally on desktop or vertically on sidebar and mobile layouts.

The recommended limit is no more than 2 snippets per page, or 2 to 3 on mobile.

This is a display size only, advertisers must still upload the standard 320x240 creative.

Frequently asked questions

What size is the Adsterra Native Banner Unit — Rendered Block (Medium Rectangle)?
The Adsterra Native Banner Unit — Rendered Block (Medium Rectangle) is 300×250 px, aspect ratio 6:5.
What is the aspect ratio of the Adsterra Native Banner Unit — Rendered Block (Medium Rectangle)?
6:5. At the recommended resolution that is 300×250 px.
What is the maximum file size for the Adsterra Native Banner Unit — Rendered Block (Medium Rectangle)?
Up to 350 KB, in JPG, PNG.
What file formats does Adsterra accept for the Native Banner Unit — Rendered Block (Medium Rectangle)?
JPG, PNG.
Why does Adsterra crop my Native Banner Unit — Rendered Block (Medium Rectangle)?
Adsterra shows Native Banner Unit — Rendered Block (Medium Rectangle) at 6:5. Upload exactly 300×250 px and keep key content in the safe area so nothing gets cut off.
Is 300×250 still correct for the Adsterra Native Banner Unit — Rendered Block (Medium Rectangle) in 2026?
Yes. Last verified 2026-07 against the official Adsterra documentation.

Check your creative

Test a file against this exact spec before you upload it anywhere.

Nothing is uploaded or saved — the check runs entirely in your browser.

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