> For the complete documentation index, see [llms.txt](https://guides.advertising.webtoon.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guides.advertising.webtoon.com/creative-guidelines/video-ads/viewer-top-video-ad.md).

# Viewer-top Video Ad

### Placement and Features

* This is a 16:9 video ad, which appears at the top of the viewer for free episodes.
* The ad plays automatically when the viewer opens and can be closed using the close button in the top-right corner after 15 seconds.

<div><figure><img src="/files/cAUzH2hixBr4wiefsUOH" alt=""><figcaption><p>Ads are displayed at the top <br>when the viewer opens</p></figcaption></figure> <figure><img src="/files/wQg8bvV19Uwy302m6bYS" alt=""><figcaption><p>The close button appears after 15 seconds</p></figcaption></figure> <figure><img src="/files/jxBngsh2BNQVzPRbcmU2" alt=""><figcaption><p>The ad is closed</p></figcaption></figure></div>

### Required Assets

* All six assets must be designed to display a single ad.

<figure><img src="/files/LLN4uMpurEkZnc22YBrf" alt=""><figcaption><p>16:9 Video, 16:9 Video Thumbnail, Advertiser Logo</p></figcaption></figure>

<table><thead><tr><th>Asset</th><th>Dimensions</th><th>File size</th><th>File format</th><th>Required Materials</th><th data-hidden data-type="image">Cover image</th></tr></thead><tbody><tr><td><strong>16:9 Video</strong></td><td>16:9 <br>(high-resolution video)</td><td>Up to 1GB</td><td>MP4, MOV, AVI</td><td>Original high-resolution video in 16:9 aspect ratio,
<br>15-300 seconds in length (audio required)</td><td><a href="/files/MYQccrehH9doA9FL9FFE">/files/MYQccrehH9doA9FL9FFE</a></td></tr><tr><td><strong>16:9 Video Thumbnail</strong></td><td>1280x720 px</td><td>Up to 100KB</td><td>JPG, JPEG, PNG</td><td>Representative thumbnail image</td><td><a href="/files/YifVwWFy6XNahzAd7eO4">/files/YifVwWFy6XNahzAd7eO4</a></td></tr><tr><td><p><strong>Advertiser</strong></p><p><strong>Logo</strong></p></td><td>300x300 px</td><td>Up to 100KB</td><td>JPG, JPEG</td><td>Advertiser logo, colored background</td><td><a href="/files/wVkKbl99A3R8eHVrgHNy">/files/wVkKbl99A3R8eHVrgHNy</a></td></tr><tr><td><strong>Ad Copy</strong></td><td>-</td><td>-</td><td>-</td><td>Up to 28 characters, including spaces (applies to all languages)</td><td></td></tr><tr><td><strong>Advertiser Name</strong></td><td>-</td><td>-</td><td>-</td><td>Up to 19 characters, including spaces (applies to all languages)</td><td></td></tr><tr><td><strong>Landing URL</strong></td><td>-</td><td>-</td><td>-</td><td>Destination URL</td><td></td></tr></tbody></table>

## Video Thumbnail Production Guide

* 1280x720px
* Keep all text at least 40 px away from the canvas margins.
* • Choose a key scene that clearly summarizes the video content or sparks anticipation.

<div align="center"><figure><img src="/files/9LnwiSJVGSDm8hfBRpPV" alt="" width="375"><figcaption></figcaption></figure></div>

## Advertiser Logo Production Guide

* 300x300px
* 1:1 aspect ratio is recommended.
* Keep the logo at least 20 px away from the canvas margins.
* Align the logo to the center of the canvas, both horizontally and vertically.
* **Logos must have a colored background; transparent backgrounds (e.g., PNG) are not allowed.**     &#x20;

<div align="center"><figure><img src="/files/8XDKASRqR9ktVYM78o0p" alt="" width="251"><figcaption></figcaption></figure> <figure><img src="/files/E4YIAxW2P1HyK66g21xJ" alt="" width="251"><figcaption></figcaption></figure></div>

## Download Guide and Sample PSD

{% file src="/files/k9hOeDGd4RLJ1L23fnxy" %}

***

## Ad Specification Overview

<table><thead><tr><th width="149.795166015625"></th><th width="212.0511474609375">Video</th><th>Logo</th><th>Video Thumbnail</th></tr></thead><tbody><tr><td>Platform</td><td>Mobile App</td><td>Mobile App</td><td>Mobile App</td></tr><tr><td>File Type</td><td>MP4, MOV, AVI</td><td>JPG, JPEG</td><td>JPG, JPEG, PNG</td></tr><tr><td>Resolution</td><td>16:9</td><td>300x300</td><td>1280x720</td></tr><tr><td>Max file size</td><td>1GB</td><td>100KB</td><td>100KB</td></tr><tr><td>Duration</td><td>15~300 seconds</td><td>-</td><td>-</td></tr><tr><td>Sound</td><td>Recommended</td><td>-</td><td>-</td></tr><tr><td>Text</td><td>-</td><td><p>Name : 19 characters</p><p>Description : 28 characters</p></td><td>-</td></tr><tr><td>VAST</td><td>Default 2.0 (1.0~3.0)</td><td>-</td><td>-</td></tr></tbody></table>

* oRTB : 2.5 and partial 2.6 for direct and programmatic direct
* Tracking : 3rd party tag, Flashtalking, Doubleverify. Doubleclick, vendor, HTML Image tag / URL, Supports cachebuster macro auto-population

{% hint style="success" %}
For any questions or advertising inquiries, please use the [**Contact Us** ](https://advertising.webtoon.com/en/contact-us)form.
{% endhint %}


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