Crop PDF Margins

Auto-detect white margins and make scanned pages easier to read.

Trim the blank borders around scanned books, articles, and reports. Use one crop for every page, separate odd and even pages, or adjust the frame by hand. Text and graphics stay in their original form.

Drop your PDF here

or use the button to choose a file

One PDF at a time. Margins are detected automatically after loading.

Your PDF is processed on your device without uploads

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01

Remove PDF margins without turning pages into images

Automatic margin detection

The tool detects content on each page and keeps a small margin around it. The default margin is 3 mm, about 0.12 inches. Blank pages are kept intact.

Original text and graphics

Cropping changes the visible page area rather than rasterizing the page. Existing text, vector graphics, and images retain their original form.

Odd and even page controls

Use separate crops for odd and even pages when a scanned book has different inside margins. Drag the frame handles to correct individual pages.

Cropping only hides content outside the visible area. It does not remove sensitive information. Use Redact PDF to remove selected content.

02

How to crop PDF margins

  1. Choose your PDF

    Drop one PDF into the tool or click Choose PDF. Your file is opened in your browser without uploading it.

  2. Review the detected crop

    The blue frame marks the area that will remain visible. Browse the page thumbnails and drag the corner or edge handles to adjust any page.

  3. Crop and download

    Click Crop and download to save one PDF. The file name ends with _cropped.pdf. Open the downloaded file to check the result.

03

Troubleshoot scanned pages

What you see What to try
Gray or yellow borders remain Lower the White threshold from 245 toward 230–200.
Dark bands at the edges Enable Ignore edge shadows. Manually adjust pages where shadows remain.
Small spots prevent cropping Enable Ignore small specks and spots.
Faint text gets cut off Raise the White threshold or increase the Margin to keep.
04

Choose a crop consistency mode

Same crop on all pages

Use a combined content area for the document. Text stays aligned and page sizes stay consistent while reading.

Separate odd and even pages

Use one content area for odd pages and another for even pages. This is useful for books with alternating gutters.

Each page separately

Fit the crop tightly around each page. Useful for figures or charts, but output page sizes can vary.

05

Frequently asked questions

QWill cropping reduce image quality?

No rasterization is performed. The tool changes PDF page boundaries, so original text and graphics remain searchable and retain their existing quality.

QDoes cropping permanently delete the cropped-out content?

No. Hidden content remains inside the file and can be revealed with PDF editing software. Use Redact PDF for information you need to remove.

QWill cropping make the PDF smaller?

Usually not by much, because the underlying content is retained. Use Compress PDF if you need a smaller file.

QHow should I print a cropped PDF?

The cropped page has a smaller visible size. Fit to page can enlarge it to the selected US Letter, A4, or other paper size. Review the print preview first.

QCan I use it on my phone?

Yes. The controls support touch input. Large PDFs may need more memory than a phone has available; try fewer pages or use a computer.

QIs my PDF uploaded?

No. Loading, previews, processing, and output generation take place in your browser. No account or installation is required.