---
metadata:
  - name: generator
    content: Diplodoc Platform v5.55.0
alternate:
  - https://yandex.com/support/partner/en/technologies/ads-visibility-check.md
  - https://yandex.com/support/partner/ru/technologies/ads-visibility-check.md
  - href: en/technologies/ads-visibility-check.md
    type: text/markdown
    title: Markdown version
  - href: ../llms.txt
    type: text/markdown
    title: llms.txt
---
> **Documentation Index:** Fetch the complete configuration index at https://yandex.com/support/partner/en/llms.txt

# Testing ad unit visibility

To provide our partners and advertisers with accurate statistics, Yandex Advertising Network only counts impressions for ad units that were actually viewed by site users. The Yandex Advertising Network counts an impression in two cases:

- If at least one pixel of the ad unit was in the visible area of the screen. In statistical reports, the number of such impressions is displayed in the **Impressions** parameter.

- An impression counts if at least 50% of the unit area is in the visible area of the screen for at least two seconds. To learn the number of impressions that meet these conditions, go to the statistical reports and select **Viewable impressions**. Partners receive revenue for viewable impressions. To learn more about how revenue is calculated, see [Documents and payments](https://yandex.com/support/partner/en/payments/index.md#calculation).

The reasons why site visitors did not see advertisements on the site could be as follows:

- **The ad is displayed beyond the visible part of the site**: for example, when ads are positioned at the end of the page or in a part of the page that is not seen on the screen without scrolling.

- **The ad code does not load the ad quickly enough before the user leaves the page**: for example, when a page contains a large number of elements like images, videos, large tables, etc. This problem occurs most often for users with a slow internet connection.

- **There could be a conflict between ad code and other scripts running on the page**: in this case, you can run a script check and find out which of them is affecting the Yandex ad impression. One by one, disable all scripts that run on the page in order to identify the one that is causing the conflict.




<!-- source: en/_includes/feedback-forms/common-buttons.md -->
## Contact support




<details>
    <summary class="button">Write to WhatsApp</summary>
    <img src="https://yastatic.net/s3/doc-binary/src/support/partner/qr-codes/gr-code-en-new.svg" style="width: 100%; display: block;"/>
    <a href="https://wa.me/74952583554?utm_source=yan&utm_medium=help&utm_campaign=en" style="display: block; text-align: left; margin-left: 18px; color: #5889FF;">Go to WhatsApp</a>
</details>

 <details>
    <summary class="button">Write to Telegram</summary>
    <img src="https://yastatic.net/s3/doc-binary/src/support/partner/en/qr-codes/qr-code-en-telegram.svg" style="width: 100%; position: relative; left: -18px; display: block;"/>
    <a href="http://t.me/YanSupport_Bot" style="display: block; text-align: left; margin-left: 18px; color: #5889FF;">Go to Telegram</a>
</details> 

<a href="https://yandex.ru/chat?context=%7B%22entrypoint%22%3A%22%7B%5C%22entrypoint%5C%22%3A%5C%22help%5C%22%2C%5C%22a_pagename%5C%22%3A%5C%22partner-en%5C%22%7D%22%7D#/user/00155607-f40f-9af8-7910-84a29fd95914"> <!--ссылка, куда ведет кнопка. Если внутренняя ссылка, пишем без .md и .html --> 
  <span class="button">Write to chat</span> <!--текст на кнопке--> 
</a>


<a href="https://forms.yandex.com/surveys/10014803/?lang=en"> <!--ссылка, куда ведет кнопка. Если внутренняя ссылка, пишем без .md и .html --> 
  <span class="button">Send an email</span> <!--текст на кнопке--> 
</a>



<!-- source: en/_includes/feedback-forms/button-style.md -->

<!-- endsource: en/_includes/feedback-forms/button-style.md -->

<div width="100%" align="center"> 
<br><br>
You can also go to
<br><br>

[![](https://yastatic.net/s3/doc-binary/src/support/mobile-ads/en/logo/rsya.svg)](https://partner.yandex.com)

</div>

<div><br><br></div>
<div class="container" style="padding: 0;">
  <div class="column">
      <p style="font-size: large;">Useful links</p>
      <ul>
         <li><a href="https://yandex.ru/legal/partner/" target="_blank">Rules of participation</a></li>
         <li><a href="https://yandex.ru/legal/yan_service_offer/?lang=en" target="_blank">Yandex Advertising Network Terms of Offer</a></li>
      </ul>
  </div>   
</div>
<div><br><br></div>


<!-- endsource: en/_includes/feedback-forms/common-buttons.md -->