Image optimization for Mystore is the leading e­commerce platform provider in Norway. They handle orders for several billions norwegian kroner from more than 1800 webshops.









About Mystore is Norway’s largest e-commerce platform that handles orders worth several billion Norwegian kroner for 1,800 stores. also delivers cloud-based checkout systems and solutions for digital marketing for hundreds of e-retailers. was founded in 2006 and works exclusively with e-commerce and related services. Their goal is to make trading easy, and to help their customers achieve success. They focus on offering flexible and scalable e-commerce solutions that suit both small and large companies. is owned by Visma and today has over 50 employees in Tromsø, Oslo, Kristiansand, Trondheim, Fredrikstad, Harstad and Serbia.

ShimmerCat is integrated in the Mystore platform


Seamless integration

ShimmerCat is added to new shops in a few clicks


Chrome Extension

Dedicated Mystore Chrome Extension to see the compression effects live


Insights report

Regular data reports sent to Mystore customer to see the image optimization effects

Shop example

Image optimization with ShimmerCat helps Beautyheaven improve the customer experience in the online store!

“We knew we had a lot of work to do in the online store considering the large images that led to slower loading times. But with so many pictures, it became very time consuming to do this manually. This job became incredibly much easier for us with ShimmerCat. After we installed the service in the online store, our landing page has gone from around 15 MB to 2 MB in image size - a reduction of 86%!”

Jorun Landsvik


Why partner with ShimmerCat?

Images account for more bytes than any other part of a website, especially e-commerce sites. This is why optimizing images is one of the best ways to improve website performance and get happier website visitors.

With ShimmerCat, Beautyheaven benefits from an image optimization specifically made for commerce, focused on next-generation image formats, maintained image quality and reduced weight of the site.

The implementation only takes a few seconds, and it’s already integrated into Mystore platform.



Skin Care



About offers a full range of skin care products. They are authorized dealers of a number of well-known skin care series. With over 20 years of experience, is your experienced dermatologist online

Page Weight

ShimmerCat helps to reduce image page weight up to 90%.

Next-gen formats

Image optimization that converts jpeg and png to next-gen formats - without compensating quality.

Image Compression

Image compression to reduce file size up to 77%.

Beautyheavens Jorun Landsvik on why they use ShimmerCat:

It’s time to stop using JPEG and PNG!

Put simply, ShimmerCat delivers next-gen (next generation) images are image formats that have superior compression and quality characteristics to their JPEG and PNG ancestors. The most popular are WebP and AVIF, and as you might have already guessed, they offer the dual benefit of taking up less data while maintaining a high level of quality. Soon another format named JPEG-XL will be introduced on the web, and it is already supported by ShimmerCat.

“ShimmerCat optimizes the original images to several different image formats using the same quality threshold and then chooses the smallest format. This leads to extraordinary results! Our landing page went from around 15 MB to 2 MB in image size with ShimmerCat - that is an image weight reduction of 86%!”

“This is one of the easiest implementations we had done - with just a few clicks in our dashboard ShimmerCat started to optimize our images. And the support from Mystore and ShimmerCat has been great since day one. It’s even possible to book free meetings to get valuable feedback.”

Improving customer experience

Beautyheaven was relying on Mystore’s default image solution for its online image handling. The solution inside the platform did its job, but to further improve customer experience Beautyheaven needed a more modern technology update. Therefore ShimmerCat entered to help Beautyheaven deliver a high-quality web experience by applying cutting edge image optimization technology.

Individual image quality before collective encoding

Instead of just submitting an image to an image encoder with fixed settings once (the market standard) ShimmerCat applies the encoder several times with different settings, and searches to find the encoding that produces the smallest image with the specified perceptual quality.
For each single image, ShimmerCat then checks if it should be served as WebP, AVIF or optimized JPEG. Since all formats have equivalent quality, ShimmerCat chooses the smallest format that the browser can accept.
The effect of this - instead of for example “only” serving a standard format - is on average more than 20% additional compression. This helps to reduce the size of every individual image while keeping image quality.

“The significant effects of reducing page weight improves both performance and the customer experience, which is amazing. We’re grateful for Mystore’s procurement of the service from ShimmerCat for such a low price”

Want help to optimize your product images with ShimmerCat?

Please fill in the form and we will provide you a free image report. We know the tech team already has a lot of other things to focus on

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