Crop PDF Pages — Trim Margins Online, Free and Private

Cut away white margins or zoom in on part of a page. Drag the crop box, type exact margins, or let it detect the margins for you.

Local Processing — No PDF Upload Required
Now on iOS

Quick facts: Crop PDF

Price
Free, no limits
File upload
None. Files are processed in your browser
Account
Not required
Watermark
None
Input
PDF
Output
PDF
Works on
Windows, macOS, Linux, ChromeOS, iPhone, iPad, Android

Privacy Guaranteed

Unlike other tools, we do NOT upload your files to a server. All processing happens in your browser, so your bank statements and private IDs stay on your computer.

Drag the box, type exact margins, or auto-detect white margins.
Crop every page or just one, with a live preview.
No upload — pages are cropped in your browser.

How to Crop PDF

  1. Select your PDF or drag it into the upload area. The first page appears with a crop box.
  2. Drag the edges or corners of the box, type the margins in mm or inches, or click "Auto-detect margins".
  3. Choose whether to crop all pages or only the one you are looking at.
  4. Click "Crop PDF" and download the cropped file.

About Crop PDF

Trim Your PDF to Just What Matters

Scanned pages with wide borders, slides with empty space around them, or a page where you only need one figure: cropping makes the content fill the screen and the printout.

Three Ways to Set the Crop

  • Drag the box's edges and corners on the page preview, or drag the whole box to move it.
  • Type exact margins for the top, bottom, left and right in millimeters or inches.
  • Auto-detect finds the white margins around the content and sets the box for you.

All Pages or Just One

Apply the same crop to every page, or flip through the pages and crop only the one you need. Landscape and rotated pages are cropped exactly as you see them.

What Cropping Does

Cropping changes the visible area of each page, which is what every PDF reader, printer and converter uses. The content outside the box is hidden, not deleted, so it is not a way to remove sensitive information.

Private by Design

The crop is applied in your browser with pdf-lib. Your document is never uploaded and nothing else in it changes.

Frequently Asked Questions

QHow do I crop a PDF for free?

Open PDFMerger.io/crop-pdf, select your PDF, drag the crop box or type the margins, and click "Crop PDF". It is free, with no sign up and no watermark.

QCan it remove white margins automatically?

Yes. Click "Auto-detect margins" and the box snaps to the content of the page you are viewing, with a small border. You can adjust it before cropping.

QCan I crop only one page?

Yes. Go to the page with the arrows under the preview and choose "Only page N" before you click "Crop PDF". The other pages stay as they are.

QIs the cropped-out part deleted?

No. Cropping hides the area outside the box in every reader and printout, but it stays in the file. Do not use cropping to remove confidential information.

QIs my PDF uploaded?

No. Everything happens in your browser, and your file never leaves your device.