Why crop PDF pages
Scans often have black or grey borders, uneven margins or scanner bed edges, and many PDFs have very wide white margins that make text tiny on phones. Cropping trims these edges so pages look cleaner, print better and are easier to read on small screens.
How it works
Enter how many millimetres to remove from the top, right, bottom and left, and choose all pages or only the pages you type. The visible area of each page is reduced; the text and pictures inside the remaining area are not changed and stay as sharp as before.
Measuring the right amount
A ruler on a printed copy, or your PDF viewer's measuring tool, helps find the right margin. Start with small values such as 5–10 mm, check the result, and increase if needed. Remember that 25 mm is about one inch.
Common problems and how to fix them
Text near the edge was cut off: use smaller values and crop again from the original. Pages have different layouts: crop them separately by typing different page numbers. Private content outside the cropped area: cropping hides it from view but does not delete it from the file — use Redact PDF to remove private content permanently.
Good habits
Keep the original file, crop all similar pages with the same values for a consistent look, and check the first and last pages after cropping.