Having just raised an issue and a fix on git for the ImagickBackend.php I though I would again raise the question of treating PDFs as images so that one gets a thumbnail of PDFs created when uploading them. This would be very useful for editors.
Basically I think PDFs are a unique class. The are documents that need an image made of them in parallel.
I have tried to alter the image definitions but thus far failed to make it work. Any ideas?