Crop PDF Margins

The Crop PDF Margins tool trims unwanted whitespace from the edges of every page in a document so the content fills the frame.

Drop in a PDF, set how many points to shave off the top, right, bottom and left, and download a rebuilt file whose page boxes have been tightened to match.

Scanned pages, slide exports and reports often carry generous borders that waste screen space on tablets and e-readers, or leave awkward gaps when a PDF is placed into another layout.

Cropping fixes that without re-flowing any text: the tool adjusts each page's crop box and media box, so the visible area shrinks while the underlying content is preserved exactly where it was.

Margins are measured in PDF points, where 72 points equal one inch, which makes it easy to dial in a precise trim.

The same four values are applied to every page, giving a consistent look across the whole document.

Because the maths runs through pdf-lib entirely inside your browser, the PDF never leaves your device — a real benefit for statements, contracts and anything you would rather not upload — and the tool keeps working offline once loaded.

Your original file is read only; the cropped version is a fresh download, so you can experiment with different margins without risk.