Image renditions are applied to images inserted into SharePoint page content. In this recipe, we will insert an image into a page and apply an image rendition to it.
Follow these steps to apply an image rendition to an image in page content:
In your preferred web browser, navigate to the publishing page and open it for editing.
Place your mouse cursor in a content zone on the publishing page.
Navigate to Picture | From SharePoint on the INSERT tab in the ribbon as shown in the following screenshot:
Select the image you want to insert.
Click on Insert.
Select Pick Rendition from the IMAGE tab in the ribbon.
Save the publishing page.