How to crop PDF pages
Dark shadows at the edge of scanned pages, wide borders in slide decks, or margins that make text tiny on a phone can all be trimmed. You see the page and pull the corners of the frame to mark what stays.
Apply the same frame to every page or crop only the page you see. Nothing is redrawn: text stays sharp and selectable and links keep working; only the visible area gets smaller.
Cropping hides what is outside the frame but does not delete it from the file. To remove information for good, use the Redact PDF tool.