Crop PDF Margins — Free, No Upload
How it works — 100% in your browser, no upload
Quick answer: add a PDF, enter how many points to trim from each edge, and download. Cropping narrows the page CropBox, which is exactly what e-readers need to stop wasting screen space on white borders.
Drop a PDF here to crop
Margins are trimmed locally with pdf-lib.
How to crop a PDF
- Add a PDF. Drop the document onto the drop zone.
- Set the margins. Enter the points to cut from top, right, bottom and left (72 pt = 1 inch).
- Apply. The CropBox of every page is narrowed.
- Download. Save the cropped PDF.
Frequently asked questions
What is a PDF point?
One point is 1/72 of an inch. A typical A4 page is 595 × 842 points, so a 1 cm margin is about 28 points.
Is the cropped content deleted?
No. Cropping hides the area outside the CropBox; the underlying content is preserved, so the change is reversible.
Why crop a PDF for an e-reader?
Removing white margins makes the text fill more of a small screen, which noticeably improves readability on Kindle and tablets.
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