How do I crop pages in Adobe Acrobat to adjust the PDF size?

Open your PDF in Acrobat. Go to the Edit menu. Click Crop pages. Draw the area you want to keep. Apply the crop and save your file.

How is cropping in Acrobat different from resizing a page?

Cropping Resizing. Hides parts outside the crop box Changes the whole page size Content is still there, just hidden Content is adjusted to fit new size Can be undone May change layout or scale

Adjust Page Dimensions in Adobe Acrobat — How-to & AI prompts

AI prompts

3 ways to ask · copy any one

AExecute — “help me do it”I’ve scanned three invoice pages, the purchase order, and the delivery note. Put them in order:…+

I’ve scanned three invoice pages, the purchase order, and the delivery note. Put them in order: [document=PO], invoices, delivery note, fit all pages to A4, and save as one file named [filename=Supplier-123-Complete-by-Friday].

when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed.

BImprove — “do it better”The procurement lead will only skim the first two pages and hates tiny margins. Combine the…+

The procurement lead will only skim the first two pages and hates tiny margins. Combine the contract, signature page, and annexes so the signature page is second, reflow pages to A4 with readable margins, and produce a one‑page cover that states total [value] and [renewal date] for quick review.

when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed.

CDecide — “help me choose”I have handwritten receipts, a typed statement, and a stamped invoice that need to go to…+

I have handwritten receipts, a typed statement, and a stamped invoice that need to go to finance tomorrow. They get picky about order and legibility. Advise whether to crop and scale the scans to A4, put the stamped invoice first for proof, and whether to include a separate index page. Recommend the exact arrangement and resizing settings that reduce questions and make approval likely on first pass.

when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed.

How to do it

the tool · the steps · what to avoid

1
Open your PDF file in Adobe Acrobat.
2
Select Organize Pages from the right-hand pane.
3
Click the Crop Pages tool (scissors icon) in the secondary toolbar.
4
Drag a rectangle on any page to visually define the new margin area you want to keep.
5
Double-click inside the rectangle to open the Set Page Boxes dialog.
6
In the Margin Controls section, enter your desired values for Top, Bottom, Left, and Right margins.
7
Under Page Range, select All to apply the crop to every page in the document.
8
Click OK to crop all pages to the specified margins.
9
Save the PDF to preserve the cropped pages.
Best practiceIf your document has pages of different sizes, double-check the result to ensure the crop is consistent across all pages.

In the appWith the API

You can preview the cropping area before applying it to all pages by adjusting the rectangle and margin values.

This runs in the Acrobat app - there is no separate API for this task.

Glossary

words on this page

CropTo cut off the unwanted outer parts of an image.ExampleI will crop the photo to remove the distracting background elements.

MarginsThe empty space around the main content on a page.ExampleYou adjust the margins to make the text fit better on the page.

SanitizeTo remove sensitive or private information from a document before sharing it.ExampleRemember to sanitize the document by redacting personal details before sharing it publicly.

The real tasks

the one, listed here

Need to bundle mixed scans for vendor approval on tight deadline

FAQ

about this task

Open your PDF in Acrobat.
Go to the Edit menu.
Click Crop pages.
Draw the area you want to keep.
Apply the crop and save your file.

Cropping a page in Acrobat hides everything outside the area you select, but it does not really delete it. The hidden parts are still in the file and can be brought back later. Cropping is good for making a page look cleaner, but it is not the same as erasing data.

Yes, cropping can hide the black borders so only the main part of your scan shows. This makes your PDF look cleaner and more professional.

It is important to sanitize after cropping because cropping only hides the parts you do not want, but does not delete them. If you share the PDF, someone could recover the hidden data. Sanitizing removes these hidden parts, making sure no one can see or restore them. This is very important if your document has private or sensitive information outside the crop area.

Cropping	Resizing
Hides parts outside the crop box	Changes the whole page size
Content is still there, just hidden	Content is adjusted to fit new size
Can be undone	May change layout or scale

Adjust Page Dimensions

When to use it

AI prompts

How to do it

Glossary

The real tasks

FAQ

Sources

Adobe help