Sejda PDF

Crop PDF

Trim margins or change the page size.

Drag & drop your files here

Supported: PDF

Files are handled privately and removed automatically. Interface preview - processing is not enabled yet.

About Crop PDF

Drag a crop box over the content, apply it to one page or all of them, and reclaim the white space that wastes screen area on a tablet.

  • Automatic margin detection
  • Different crops for odd and even pages
  • Non-destructive to page content

How to crop pdf

  1. 1

    Upload the document

    The first page opens in the crop view.

  2. 2

    Draw the crop box

    Or let auto-detect find the content edges.

  3. 3

    Apply

    To this page, the odd/even pages, or everything.

A practical guide to crop pdf

When trimming the page pays off

Crop a PDF when wasted space is getting in the way. Scans often arrive framed by a gray border or wide empty margins that shrink the readable area on a tablet or phone; trimming them makes the text larger and the document easier to read. It is also useful for cutting a header or footer band you do not want, focusing a page on a single figure or table, or standardizing an uneven set of scanned pages to one clean size. When you need more space rather than less, the add-margins tool is the counterpart.

Getting an even, professional trim

For a consistent look, start with auto-detect to snap the box to the real content, then fine-tune by a few millimeters so nothing important sits right on the edge. On double-sided material, set separate crops for odd and even pages so the content stays centered as you page through. Preview a couple of pages beyond the first before applying to all, since a stray wide figure can be clipped by a box that suited the opening page. Keeping a small uniform margin around the content usually reads better than cropping tight to the ink.

What crop does under the hood, and next steps

It helps to know that cropping hides the area outside the box rather than deleting it, which keeps the operation reversible until you decide otherwise. If you are sharing the file and want the hidden material truly gone, run flatten afterward so nothing can be revealed by re-cropping. Printers follow the new crop box, so your trimmed size is what comes out on paper. Crop pairs naturally with deskew for tilted scans and with compress once you have removed heavy borders. Files are handled only for your session and deleted automatically, with no signup needed.

Frequently asked questions

Can I apply one crop to every page at once?
Yes. After drawing the crop box you can apply it to just the current page, to the odd or even pages, or to the whole document in a single step. Applying to all is the fastest way to trim a consistent scanner border or a uniform white margin from a long file.
Does auto-detect find the content edges for me?
It does. Rather than dragging the box by hand, you can let the tool detect where the actual content sits and snap the crop to those edges. That is a big time-saver for scans surrounded by empty space, and you can still nudge the box afterward for fine control.
Can odd and even pages be cropped differently?
Yes. Double-sided scans often have the content shifted toward the binding on alternating pages, so you can set one crop for odd pages and another for even pages. That keeps the visible area centered consistently across a book or report rather than drifting side to side.
Does cropping change the text or images themselves?
No. Cropping adjusts the visible page boundary rather than editing the content, so text stays selectable and images keep their quality. The material outside the box is hidden, not rewritten; if you want it gone permanently, flatten the file afterward.

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