Annotations & links

1. Annotations
2. Links

---

Sample PDF for this guide: example.pdf — the invoice footer contains a clickable link annotation.

Annotations

require "rpdfium"

Rpdfium.open("example.pdf") do |doc|
  doc.page(0).annotations.each do |a|
    puts "#{a.subtype}: #{a.bbox.inspect}"
  end
end

Output:

link: {x0: 50.0, x1: 250.0, top: 766.88, bottom: 781.88}

Annotation dictionary values are reachable with [] (e.g. a[:Contents] for comment text on :text/:highlight annotations).

Links

Rpdfium.open("example.pdf") do |doc|
  doc.page(0).links.each do |link|
    puts link.link_uri || "→ page #{link.link_dest_page}"
  end
end

Output:

https://github.com/retsef/rpdfium

link_uri is set for external URI actions; internal GoTo links report the target page through link_dest_page instead.

For bookmarks (outline) and file attachments, see Documents & pages.