Ad Formats - AdXensor

AdXensor supports all standard IAB display ad sizes plus a responsive auto mode. Choose the format that fits your page layout, or use auto to let the SDK pick the best size for each visitor’s device.

Supported formats

Format value	Dimensions	Common name	Best placement
`728x90`	728 × 90 px	Leaderboard	Top or bottom of page, above/below articles
`970x90`	970 × 90 px	Super leaderboard	Wide desktop headers
`970x250`	970 × 250 px	Billboard	Desktop hero sections
`300x250`	300 × 250 px	Medium rectangle	Sidebar, in-content, between paragraphs
`300x600`	300 × 600 px	Half page / Large rectangle	Sidebar, sticky units
`160x600`	160 × 600 px	Wide skyscraper	Narrow sidebars
`320x50`	320 × 50 px	Mobile banner	Mobile-only top/bottom bars
`320x100`	320 × 100 px	Large mobile banner	Mobile in-content
`468x60`	468 × 60 px	Full banner	Tablet header/footer
`auto`	Dynamic	Responsive	Any placement

Responsive mode (`auto`)

When you set data-ad-format="auto", the SDK resolves the best concrete size based on the visitor’s device and the available container width at render time:

Device	Container width	Selected format
Mobile (< 768 px)	≥ 320 px	`320x50`
Mobile (< 768 px)	< 320 px	`300x250`
Tablet (768–1023 px)	≥ 468 px	`468x60`
Tablet (768–1023 px)	< 468 px	`300x250`
Desktop (≥ 1024 px)	≥ 728 px	`728x90`
Desktop (≥ 1024 px)	≥ 468 px	`468x60`
Desktop (≥ 1024 px)	< 468 px	`300x250`

Using a format

CDN snippet
npm (React / Next.js)

<ins class="adxensor"
     style="display:block"
     data-ad-slot="my-slot"
     data-ad-format="300x250">
</ins>

<ins
  className="adxensor"
  style={{ display: 'block' }}
  data-ad-slot="my-slot"
  data-ad-format="300x250"
/>

Or using the programmatic API:

adx.defineSlot('#my-slot', { format: '300x250' });

Slot sizing recommendation

Always ensure your container is at least as wide as the ad format you request. If the container is narrower than the requested format, the ad may overflow or appear cut off.For fluid layouts, prefer auto or a format smaller than the narrowest expected container width.

TypeScript

The AdFormat type is a strict union of all valid format strings:

import type { AdFormat } from '@adxensor/publisher-sdk';

const format: AdFormat = '300x250'; // ✅ type-checked
const bad: AdFormat = '400x200';    // ❌ TS error