Crop PDF

The Crop PDF tool trims margins from every page so the visible region is just the content you care about. It is most useful for cleaning up scans with excess whitespace, removing headers and footers from printer-ready PDFs, or focusing on a chart embedded in a larger sheet.

How cropping works

PDF pages have a MediaBox (the printable area) and a CropBox (the area viewers display). This tool sets a new CropBox without altering the underlying content streams, so the change is reversible — opening the PDF in a viewer that ignores CropBox would still show the trimmed-off margins.

Units

Margins can be entered in millimetres, inches, or PDF points (1 inch = 72 points). All four edges accept independent values.