> For the complete documentation index, see [llms.txt](https://docs.wpblockslider.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wpblockslider.com/controller-blocks/thumbnails-controller-block.md).

# Thumbnails Controller Block

This guide covers all about the thumbnail controller block and how you can use it to create a stunning thumbnail pagination.

{% hint style="warning" %}
Thumbnail pagination is currently unsupported with the block slider query mode. 
{% endhint %}

### Initial Thumbnail Pagination

After inserting the thumbnail pagination. You will be presented with some placeholder thumbnails (that is automatically populated based on the slide count of your slider).

<figure><img src="/files/L9bE098MlOte9dkMno50" alt=""><figcaption><p>initial thumbnail pagination</p></figcaption></figure>

### Uploading Thumbnails

You can now insert your desired thumbnail images by clicking on each of the thumbnail items.

<figure><img src="/files/yMuj8o8cmWsxQkIWm580" alt=""><figcaption><p>uploading thumbnails</p></figcaption></figure>