> ## Documentation Index
> Fetch the complete documentation index at: https://docs.adrop.io/llms.txt
> Use this file to discover all available pages before exploring further.
# Ad Unit Formats
> Introducing the 6 Ad Unit formats supported by Ad Control.
## Format Selection Guide
| Purpose | Recommended Formats |
| ----------------------- | -------------------- |
| **Continuous Exposure** | Banner |
| **High Visibility** | Interstitial, Splash |
| **User Rewards** | Rewarded |
| **Natural Exposure** | Native |
| **Events/Promotions** | Popup |
***
## Banner
A rectangular ad displayed in a fixed area. The most common format, typically shown as a strip at the top or bottom of the screen.
**Sizes**
| Name | Size | Description |
| ------------------ | ---------------- | --------------------------------- |
| **MREC** | 300x250 | Recommended for PC & Mobile |
| **Mobile** | 320x50 | Recommended for Mobile |
| **Mobile Large** | 320x100 | Recommended for Mobile |
| **Leaderboard** | 728x90 | Recommended for PC top placement |
| **Half Page** | 300x600 | Recommended for deep scroll areas |
| **Landscape 16:9** | 320x180 | Recommended for video ads |
| **Portrait 9:16** | 180x320 | Recommended for video ads |
| **Custom** | Specify directly | |
All sizes support video creatives. For more details, see [Video Ad Units](/ad-unit/video).
### Banner Template
Using a template automatically applies background and padding around the ad creative. It naturally fills empty space when the creative size is smaller than the Ad Unit.
**Background Color**
If not using a template, you can set the background color directly. Choose a color that matches your app or website design.
### Carousel Banner
When multiple campaigns are running, carousel is activated to rotate ads. Ads are displayed in random order to prevent performance concentration on the first ad.
Video banners cannot use carousel.
**Carousel Activation**
Select whether to use carousel when creating an Ad Unit.
| Situation | Behavior |
| ------------------------------------------- | ---------------------------------------------------------------- |
| **Multiple Campaigns** | Carousel is created and ads rotate during display |
| **Single Campaign with Multiple Creatives** | Creatives are randomly displayed at equal rates without carousel |
**Indicator Display**
Shows which ad is currently displayed. Appears in the bottom right as "current position/total count" format (e.g., 1/3).
**Rolling Time**
The interval at which the carousel automatically switches. Default is 3 seconds, with 3-4 seconds recommended per ad.
**Operation Policy**
| Item | Details |
| ------------------------ | ----------------------------------------- |
| **Maximum Ads** | 20 |
| **Activation Condition** | Carousel operates only with 2 or more ads |
***
### Is Carousel Really Effective?
While it seems efficient to show multiple ads in limited space, actual monetization data and user psychology show it's not as effective as expected.
**Viewability Decline**
Only the first slide has exposure effect. Users quickly scroll without waiting 3-5 seconds for the next slide. Later ads load but aren't actually seen, creating 'phantom impressions' that can lower bid prices over time.
**Divided Attention**
CTR is highest when a single static banner delivers a clear message. When images constantly change and multiple messages roll, users feel fatigued by information processing and tend to look away.
**Banner Blindness**
Users tend to recognize 'moving sliders' as ad areas and ignore them. Visibility is lower compared to native ads that naturally blend into content.
**Recommended Alternatives**
| Method | Description |
| ------------------------- | ---------------------------------------------------------------------------------------- |
| **Single Banner** | Display the best-performing ad permanently to improve CTR |
| **Add Separate Ad Units** | Add Ad Units in different locations instead of carousel to secure exposure opportunities |
Carousel has good 'space efficiency' but poor 'ad efficiency (revenue)'. If maximizing revenue is your goal, we recommend single banners.
***
## Splash
An ad displayed when the app first starts. Occupies the entire screen for excellent brand first impression effect.
**Size**
| Name | Size | Description |
| -------------- | ------- | ----------- |
| **Bottom 4:3** | 360x270 | |
**Options**
| Option | Description |
| -------------------- | ------------------------------ |
| **Background Color** | Set splash background color |
| **Display Duration** | Time the ad is displayed |
| **Dark Mode** | Support for Dark Mode creative |
**Features**
| Item | Details |
| ---------------------- | -------------------------------------------------------------------------- |
| **Impression Product** | Does not support clicks, click count shows 0 in reports |
| **Preloading** | Ad information is preloaded to user devices 72 hours before campaign start |
Creative changes may not be reflected immediately. Finalize creatives and complete review 72 hours before campaign start.
***
## Popup
An ad displayed as a popup on part of the screen. Exposed at bottom or center, with high visibility as it appears covering the screen.
**Sizes**
| Name | Size | Description |
| ------------------------- | ---------------- | ------------------------- |
| **Bottom Landscape** | 360x240 | |
| **Bottom Portrait** | 360x450 | |
| **Bottom Landscape 16:9** | 320x180 | Recommended for video ads |
| **Bottom Portrait 9:16** | 180x320 | Recommended for video ads |
| **Bottom Custom** | Specify directly | |
| **Center Square 1:1** | 360x360 | |
| **Center Landscape 16:9** | 320x180 | Recommended for video ads |
| **Center Portrait 9:16** | 180x320 | Recommended for video ads |
| **Center Custom** | Specify directly | |
### Templates
Popup ads offer two templates.
| Template | Description |
| ------------------------------- | -------------------------------------------------------------------- |
| **Ad Performance Optimization** | Template with enhanced click prompts, selectable CTA button position |
| **Don't Show Today** | Template convenient for users to close ads |
### Close Options
**Close by Tapping Outside**
| Setting | Behavior |
| ------- | --------------------------------------- |
| **ON** | Ad closes when touching outside ad area |
| **OFF** | Ad can only be closed with close button |
**Outside Area Background Brightness**
Adjusts darkness of background behind popup. Choose from 80 (dark), 55 (medium), 30 (bright).
**Don't Show Today**
| Option | Description |
| ---------------------------- | ------------------------------------------ |
| **Don't Show Ads Today** | Don't display entire Ad Unit for today |
| **Don't Show This Ad Today** | Don't display only this campaign for today |
### Popup Carousel
When multiple campaigns are running, ads rotate in carousel format.
**Carousel Display Count Limit**
| Setting | Behavior |
| ------- | ---------------------------------------- |
| **OFF** | Display up to 20 (system default) |
| **ON** | Specify maximum between 1-20 (default 5) |
Limiting carousel count to 3-4 increases user focus and improves CTR.
**Display Priority**
When available ads exceed carousel limit, they are selectively displayed based on the following priority.
| Priority | Criteria |
| -------- | -------------------------------------------- |
| **1** | Ads with Targeting settings prioritized |
| **2** | Ads with smaller Targeting pool prioritized |
| **3** | Ads with lower Campaign progress prioritized |
| **4** | CPP ads displayed randomly |
If carousel limit is less than sold slots, ads are randomly selected for display. As carousel count increases, ad efficiency decreases, so we recommend adjusting slot count to match carousel limit.
***
## Native
An ad that naturally blends with app or website content design. Article-style ads in news feeds are typical examples, with freely customizable UI.
**Sizes**
| Name | Size | Description |
| ---------------------- | ---------------- | ----------------------------------------------- |
| **Mobile Wide 1.91:1** | 600x314 | Recommended for Mobile |
| **PC Wide 1.91:1** | 1200x628 | Recommended for PC |
| **Square 1:1** | 360x360 | |
| **Landscape 16:9** | 320x180 | Recommended for video ads |
| **Portrait 9:16** | 180x320 | Recommended for video ads |
| **Custom** | Specify directly | |
| **No Image/Video** | | Ad performance may decrease without image/video |
### Native Default Fields
Default fields recommended for better ad performance.
| Item | Description |
| ------------------------------- | ----------------------------------------------- |
| **Advertiser Logo** | 256x256px or larger |
| **Advertiser Name** | 10-20 characters recommended |
| **Call-to-Action (CTA) Button** | When activated, advertisers can select CTA text |
| **Ad Headline** | Text label, max character limit configurable |
| **Ad Description** | Text label, max character limit configurable |
### Native Additional Fields
Custom fields can be set for additional information like background color, tags, posting date, engagement metrics.
### Native Options
**AD Mark Display**
Displays 'AD' watermark at top right of ad so users recognize it as advertising. If disabled, users may not recognize it as an ad.
**Accept Dark Mode Creatives**
When enabled, you can accept creatives for dark mode.
***
## Interstitial
A full-screen ad covering the app/web screen. Typically exposed when user activity temporarily stops, such as when a game level ends or page transitions.
**Sizes**
| Name | Size | Description |
| -------------- | ------- | ---------------------------------------------------- |
| **Portrait** | 320x480 | Full image type, fills entire screen with ad image |
| **Square 1:1** | 360x360 | Structured layout, includes title/content/CTA button |
### Close Button Delay Time
Sets time until close button appears after ad is displayed. Users cannot close the ad during delay time, so set appropriate time to balance ad effectiveness and user experience.
High exposure, CTR, and conversion rate are advantages, but displaying too frequently can harm user experience (UX).
***
## Rewarded
An ad that encourages video viewing in exchange for in-app rewards. When users watch the ad to completion, rewards such as items, points, or lives are provided. Frequently used in mobile games.
**Size**
| Name | Size | Description |
| ----------------- | ------- | ------------------------- |
| **Portrait 9:16** | 180x320 | Recommended for video ads |
### Advantages of Rewarded Ads
| Target | Benefits |
| ------------------ | ------------------------------------------------------------ |
| **App Developers** | Maximize revenue with high ad pricing and completion rates |
| **Users** | Acquire rewards without resistance through voluntary viewing |
| **Advertisers** | High visibility and guaranteed complete viewing |
***
## Next Steps
Check video creative specifications and supported formats.