Can I enter a decimal margin like 12.5 mm?

Yes, with a dot or a comma. Give one number for all sides or four for top, right, bottom, left; two or three numbers are rejected.

What if the margin is bigger than the page?

The page is never cropped to nothing: at least about 7 mm of width and height is kept.

Is the trimmed content actually removed from the file?

No. The visible page area is made smaller, so viewers and printers no longer show the edges, but what lies outside stays in the file. To remove something private, redact it.

Tools ›

Crop PDF margins

Trim the same margin from every page, in millimetres: one value for all sides, or top, right, bottom, left.

Open Crop margins →Free · no sign-up · your file never leaves your browser

When you'd use it

A scanned book page has thick black borders from the scanner lid.
Lecture slides exported to PDF have wide white margins that make text tiny on a tablet.
A print proof came with bleed and crop marks and you need a clean version to email.

Just say what you need

There are no menus to learn. Drop your file on pdfagents.ai and type it the way you would say it:

“crop 10mm margins”
“trim 15 20 15 20”
“cut off the white border”

How it works

Drop the PDF.
Give the margin in millimetres.
Download the cropped PDF.

Questions

Can I enter a decimal margin like 12.5 mm?: Yes, with a dot or a comma. Give one number for all sides or four for top, right, bottom, left; two or three numbers are rejected.
What if the margin is bigger than the page?: The page is never cropped to nothing: at least about 7 mm of width and height is kept.
Is the trimmed content actually removed from the file?: No. The visible page area is made smaller, so viewers and printers no longer show the edges, but what lies outside stays in the file. To remove something private, redact it.

Private, and it keeps going

Your document is opened and saved on your own device, never uploaded. When the result is ready, type the next request (rotate, compress, add a password) and it applies to the result.

Crop margins, right now

The PDF with the same margin trimmed from every page.

Open Crop margins →

Doing this often? The free Mac app runs this agent on whole folders, offline, with no page limit. See the Mac app →