Custom image size in templates

Hi all

I just found out that we can configure the size of images that are shown in PDF’s generated by templates.

Unfortunately, the sizes are a little inconvienient for our needs. The medium is too big and the small one too small.

An option for 300x300 or 400x400 pixel would be great. Or even better if we could specifiy it ourself.

Or is there already a workaround for this?

Thanks in advance. This feature would be really great for our needs.