Allow use webp instead png

[Eduardo-Morales-Alberti]

We are saving bitmap references on our repository, but PNG images have big sizes.
Exists any possibility of using optimized image formats like webp?

[fuhlig]

Very good point.
I'd be very interesting. In my current project VRT is run (on demand) per feature branch for a component library for multiple brands, creating 3000+ screenshots (~300-400mb) per brand.
Achieving a reduction of the usual 20-30% with webp compared to png would be a great improvement on multiple fronts.

[theo-staizen]

Or even the ability to configure the quality of the png?
Our DevOps put a 1mb limit on file size and some of the screenshots exceed that (we are testing fullscreen for some scenarios)

[fuhlig]

Or even the ability to configure the quality of the png? Our DevOps put a 1mb limit on file size and some of the screenshots exceed that (we are testing fullscreen for some scenarios)

Could be an option but is there the possibility that reduced quality could result in artifacts which then result in false positive diffs?

[ygerasimov]

You can convert png images to webp using sharp library. We do it here . There is one caveat -- an image should be under 16k x 16k pixels (see quora thread)

[fuhlig]

Instead of converting the image afterwards, isn't it more performent to create it in the target format?

In my current project setup there are reports for multiple brands, each with ~3000 images. Converting afterwards after each run, I suspect this is very resource intense.