Support EPS files

[dbackeus]

Pro user here.

We just realized that imgproxy doesn't appear to support EPS files.

It is my understanding that libvips supports it.

Is there a reason it's not supported? Could support be added?

[DarthSim]

Hey @dbackeus!

Libvips supports loading EPS with ImageMagick. We did a lot of work to get rid of IM and I really don't want to bring it back:

IM is a large attack surface. More specifically, libvips have to decode the whole image with IM even to parse its header. This is a huge drawback when working with vector formats. When imgproxy loads vector formats, it first reads the image dimension and then decodes the image to the requested size to reduce memory usage and protect itself from image bombs (images with huge sizes). If an image is fully decoded right away, we're in danger.