[cfstras]

> By upgrading your image server to thumbor you would go from 12989.07kb to 16106.04kb for 22 images (using WebP images).

On my gallery page:

> By upgrading your image server to thumbor you would go from 16687.68kb to 29581.33kb for 19 images (using WebP images).

All of my images get filtered through convert through convert(1) -quality 90, could that be a reason?

[heynemann]

Yes. Sometimes thumborize.me will get the image sizes weirdly. It's there mainly to give you an idea. The settings are the standard ones that come with thumbor. If you tinker with the settings you always get best results. I highly encourage you to try it on your site with different quality settings. Setting up thumbor in your machine takes like 2 minutes. Have a look at the getting started page. If you need any further help please do not hesitate to create an issue and we'll most definitely help you.