Adaptive Images update for Optimizely CMS 12

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A summary of what's new in the major update for Adaptive Images released for Optimizely CMS 12.

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Key takeaways

  • Compatible with Optimizely CMS 12
  • Cloudinary not required for production environments
  • Support for focal points and multiple proportions formats
  • No license file needed
  • NuGet packages renamed to AdaptiveImages

A major update

In addition to being renamed from Episerver to Optimizely, the release of CMS 12 involved major technical updates, not least the move to .NET 5.

This also resulted in a major update of the Adaptive Images add-on. While most remains familiar for users, there's been substantial improvements behind the scenes for developers. In this post we'll go through what's new.

What is Adaptive Images for Optimizely?

If you're not familiar with Adaptive Images, here's a short 4-minute overview of how it works for web editors:

What's new?

  • Manual focal points in addition to (or instead of) crop areas
  • Support for multiple proportions formats
  • Disk image cache for on-premise hosting and development
  • Azure blob storage image cache for Azure/DXP hosting
  • Developer documentation at

Focal points

Users can now set a focal point by double clicking on an image in the crop dialog. This is especially useful when cropping an image programmatically to proportions different from applicable proportions constraints.

Screenshot of focal point set in Adaptive Images for Optimizely

Multiple proportions formats

Multiple proportions constraints can now be applied for the same image or form factor, giving the user multiple formats to choose from.

[Proportions(4, 3, FormFactor.Large, "Standard")]
[Proportions(16, 9, FormFactor.Large, "Widescreen", IsDefault = true)]
public virtual AdaptiveImage ProductImage { get; set; }

Screenshot of cropping an image using Adaptive Images for Optimizely

Disk or Azure blob storage image cache

To improve performance, images are now cached on disk by default. For Azure environments, there is an option to use Azure blob storage instead.


New developer documentation website

We have launched with code samples, articles, and class library documentation.

Add Adaptive Images to a website

Simply install the AdaptiveImages NuGet package from the Optimizely feed. License file is no longer needed.

For production environments, a commercial license is required. Use the contact form on or send an e-mail to to obtain a production license.