pub fn page_count(path: &Path) -> Result<u32>Expand description
How many pages the PDF’s own page tree reports.
Separate from inspect on purpose: inspect also answers
has_text_layer, and the only honest way to answer that is to extract
the text and look. Calling it merely to learn a page count therefore
costs a full extraction — which is exactly the trap that made a page
walk quadratic even after the text itself was cached.