Crop PDF Online — Trim Page Margins

What you can do

• •Trim visible margins by adjusting the CropBox in the browser
• •Start from a preset, then set exact top, right, bottom, and left margins
• •Apply one consistent crop across every page of the document
• •Preview crop edges before downloading
• •Combine with rotate when pages are sideways before trimming

How it works

1. 1

   Choose your PDF

   Select the PDF from your device.

2. 2

   Set the crop area

   Adjust the visible CropBox margins. Editing stays on your device.

3. 3

   Apply and download

   Save the cropped PDF.

Common uses

• •Remove scanner black borders from homework scans
• •Tighten slides exported with large white margins
• •Focus on the content area before compressing for email
• •Prepare pages for print when only the inner region matters

Frequently asked questions

What does crop change?

It adjusts the visible CropBox so viewers show trimmed margins. It is not a destructive pixel wipe of the entire page stream.

Can I set exact margins instead of using a preset?

Yes. Presets give you a quick starting point, then you can type separate top, right, bottom, and left values to get the trim exactly right.

Is cropped-away content really gone from the file?

No — cropping hides it rather than deleting it. The trimmed area is outside the visible page but still inside the file. If the goal is to remove sensitive content, use Redact PDF.

Does the crop apply to every page?

Yes. The margins you set are applied across the document, which keeps a scanned batch consistent.

Should I rotate before cropping?

If pages are sideways, rotate first so the crop edges match how you want to read the page.

Does crop work on mobile?

Yes, though fine adjustments are often easier on a larger screen.

Do I need an account?

No account or sign-up is required.

Related PDF tools

• Rotate PDF
• Organize PDF
• Compress PDF
• All PDF tools