pub fn read_image_dimensions(path: &Path) -> Option<(u32, u32)>Expand description
Read image dimensions (width, height) in pixels from a file. Supports PNG, JPEG, and EPS (PostScript BoundingBox).
This is a narrow replacement for Image::Size::imgsize (Perl
image_size at Util::Image L86-97). Only a few formats are needed
for typical arXiv graphics inclusions — anything else returns None
so the caller skips sizing (mirroring Perl’s return unless $w).