How to crop the white margins off PDF pages

To crop PDF margins, you mark the part of each page you want to keep and cut off the rest. In our free PDF Studio, switch to Advanced, choose Crop page on the Edit tab and drag a box around the text on one page. Then click Same crop on every page in the Settings panel and press Save PDF. The result has narrow edges, so the text looks bigger on a phone screen. It all runs in your browser; the file is not uploaded.

This guide covers the steps, how to handle pages with different margins, what cropping does and doesn't do, and fixes for common problems.

Why cut the margins off a PDF

Wide white margins make sense on paper but waste space on a screen. On a phone, a PDF is usually shown at the full width of the page, margins included, so the text is small and you end up zooming and scrolling sideways. Cutting the margins means the text fills more of the screen.

Common reasons people crop:

• Reading textbooks, notes and question papers on a phone
• Scanned pages with a dark border or a bit of the table showing
• Slides exported to PDF with a large white frame
• Printing just the useful part of a page, such as a ticket or a receipt

How to crop PDF margins in PDF Studio

1. Open the PDF. Go to PDF Studio and click Open PDF files, or drop the file onto the page.
2. Switch to Advanced. PDF Studio starts in Simple mode. Tap More tools, or choose Advanced at the top of the Settings panel on the right.
3. Choose Crop page. It is on the Edit tab. The hint says "Drag the part of the page to keep. The rest is cut off when you save."
4. Drag around the content. On a typical page, drag from just above and left of the first line to just below and right of the last. Leave a small gap around the text, so nothing touches the edge. The part you keep gets a dashed outline and the rest is darkened.
5. Apply it to all pages (optional). A Page crop box appears on the right. Click Same crop on every page if the other pages have the same layout.
6. Check a few pages. Scroll through. If a page needs a different cut, choose Crop page again and drag on that page; the new crop replaces the old one for that page only.
7. Save. Press Save PDF (or Ctrl+S). The new file ends in -edited.pdf; the original stays untouched.

To start over, use Remove crop from this page or Remove all crops on the right, or press Ctrl+Z.

Pages with different margins

Scanned books often have different margins on left and right pages, and the first page of a chapter may start lower. A good routine:

1. Crop a typical page and click Same crop on every page.
2. Scroll through and look for text that is cut off, often page numbers, footnotes or headings.
3. Re-crop just those pages with Crop page.

Same crop on every page uses the same position on each page, measured as a share of the page. Pages of a different size get a cut in the same relative place, so check them too.

What cropping does and doesn't do

Question	Answer
Is the cut-off part deleted?	No. It is hidden. The page's visible area is changed, but the content outside it stays inside the file.
Does the file get smaller?	Usually not, for the same reason.
Is the text still sharp and selectable?	Yes. Nothing is turned into a picture.
Can private details be hidden this way?	No. Some programs can show the hidden part again. Use Redact on the Protect tab, which removes the content from the file when you save.
What size is the page after cropping?	Smaller than before. A cropped A4 page is no longer A4.

That last point matters for printing. A cropped page printed with "Fit to page" (or "Fit to printable area") is scaled up to fill the paper, so the text prints larger. If you want the original size on paper, print at "Actual size" instead.

Making the file smaller as well

Since cropping doesn't remove data, the file stays about the same size. If you need a smaller file, switch on compression before you save: the Compress tab in Advanced mode (Compress on save, then Balanced or Strong), or Make the file smaller on the Save tab in Simple mode. You can also run the saved file through Compress PDF. Our guide on how to compress a PDF to under 1 MB explains the levels.

Cropping scans and photos of documents

If you are cutting margins because your scan picked up the table, the edge of the book or your fingers, it is often better to fix the scan. Our guide on how to scan documents with your phone shows how to get straight, tightly framed pages in the first place.

If you only need one page as a picture, for example to post on social media, you can export it as JPG from PDF Studio's Convert tab and trim it with Crop Image.

Common problems and how to fix them

Some text is cut off at the edge

The crop was too tight on that page. Choose Crop page and drag a slightly larger box on that page, or remove its crop.

The crop looks fine here but not in another reader

Different readers may show page edges and backgrounds slightly differently. Open the saved file in the reader you will actually use, such as your phone's PDF viewer, and check.

I can't find Crop page

You are in Simple mode, which hides the Edit tab. Tap More tools or choose Advanced.

I want to remove a header or footer, not just margins

Crop page keeps one rectangle, so you can cut away a header at the top or a footer at the bottom as long as what you keep is a single block. To hide something in the middle of a page, cover it with Whiteout, or use Redact if it is private.

Quick checklist

• Advanced mode on, Edit tab, Crop page
• Box drawn with a small gap around the text
• Same crop on every page used only when the layout matches
• Pages with headings, footnotes and page numbers checked
• Redact used, not crop, for anything private
• Compression switched on if the file must be small