Resizing multiple imported layers

I have a large number of layers to import into Synfig, but upon importing, the images are all larger than the canvas. The result is the same if I import a single image; too large.
The canvas size and resolution are the same as the images’ size and resolution. The units for Synfig and the images are the same.
This could be done manually, but it is a large number of images–it would take forever.
I’ve looked on the forums and other places and have seen this question, but not an answer.
Does anyone know of a solution?

The development version has an option to “Scale to fit Canvas” in Import dialog.
Stable version sadly don’t.

Thanks. I might try the dev version.