How to use the Crop PDF
Step 1: Drop a PDF onto the upload box, or tap it to choose a file.
Step 2: Enter how many millimetres to remove from the top, bottom, left and right.
Step 3: Watch the preview: the shaded edges show what will be removed. Optionally limit the crop to certain pages.
Step 4: Press Crop PDF, then Download PDF.
Features and benefits
Margins in millimetres
Type simple measurements for each edge.
Live shaded preview
See exactly which part of the first page will be removed before you save.
All pages or a range
Apply the crop to the whole document or specific pages.
Protection against mistakes
Margins larger than the page are rejected with a clear message.
Private
Cropping is done on your device.
How cropping works
Cropping changes the visible area of each page by setting a smaller page box. The content outside it is hidden by the page boundary rather than rewritten, so text inside the area stays sharp and searchable. Because the hidden content may still exist in the file, do not rely on cropping to remove sensitive information; use Redact PDF for that.
Choosing margins
One millimetre is about 2.8 points. A typical scanner border is 3 to 10 mm, and book-style margins are often 20 to 25 mm. The preview shows the first page, and the same margins are applied to every page you select, so check that pages with different layouts will still fit.
Example use cases
Scanner borders
Remove dark edges and shadows left by a scanner.
E-readers and phones
Trim wide margins so text appears larger on small screens.
Remove headers
Cut off a repeated header or footer you do not want to share.
Slides and posters
Crop to the part of the page that matters.
Frequently asked questions
Does cropping delete the content I cut off?
It hides it. The content may still exist in the file, so use Redact PDF to remove sensitive information permanently.
Can I crop each page differently?
This tool applies the same margins to the pages you choose. Run it again on other pages with different margins.
What unit are the margins in?
Millimetres. One millimetre is about 2.8 PDF points.
Are my files uploaded?
No. Cropping runs in your browser.
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Last updated 9 November 2026.