How to enable image renditions on SharePoint 2019

By João Ferreira Jun 16, 2019 SharePoint 0 Comments

When you install SharePoint onprimises the image renditions are not generated automatically, and the renditions pages displays the error message below.

The blob cache is not enabled in this web application. Image renditions will not be generated until the blob cache is enabled. For information on turning on the blob cache, please review the product documentation.

To fix this issue and get the image renditions automatically generated follow the instructions provided in this article.

1. On the SharePoint server open the Internet Information Services (IIS) Manager
2. Select the SharePoint Website
   
3. On the Actions pane click on Explore
4. Open the web.config file with Notepad
   
5. Press CTRL + F and search for BlobCache
6. Change the enabled=”false” parameter to enabled=”true”
   
7. Restart the Website and you the renditions will start being generated when you upload the images