Scanned pages often arrive with large empty borders that make the actual content look small and leave wasted space when printing or viewing on a phone. Cropping those margins produces a tighter, more professional document.
When cropping helps
- Removing the wide white borders left by a flatbed or sheet-fed scanner.
- Cutting a thin strip of a neighbouring page that was accidentally included.
- Tightening a document before printing so it uses the paper more efficiently.
- Preparing a cleaner version for screen reading on small devices.
How much to trim
Start conservatively — 15 to 25 points (roughly 5–9 mm) is often enough. It is easy to crop a little more later; it is harder to restore content that has already been cut off. Apply the same values to every page so the whole document stays consistent.
Trim margins from every page — free, private.
Try the Crop PDF ToolUnits and consistency
PDF geometry uses points (72 points = 1 inch). Setting independent values for top, bottom, left and right lets you handle documents that need more trim on one side than another while still treating every page the same way.
Privacy
Even a simple crop is best performed locally when the document contains personal or business information.