Crop PDF Online

Crop PDF page viewing areas by setting page margins in your browser, then download a new PDF copy.

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Crop PDF page viewing areas by setting top, right, bottom and left margins, then download a new PDF.

PDFBrowser processing25 MB soft limit

Your PDF is processed in this browser session. The pdf-lib JavaScript library is loaded from jsDelivr.

Use “all” or ranges such as 1,3-5.

Result: Choose a PDF to inspect its pages.
Important: cropping is not redaction

This tool changes each selected page’s PDF CropBox, which controls the region normally displayed or printed. Content outside that box can remain inside the PDF file. Do not use cropping to hide confidential information; use a proper redaction workflow instead.

How PDF cropping works here

Margins are measured inward from each page’s existing crop area. The same margin values are applied to every selected page. Mixed-size PDFs are supported as long as the requested margins leave a positive page area on every selected page.

Browser and file limits

Password-protected or encrypted PDFs may not load. Large or highly complex PDFs can consume more browser memory than their file size suggests. The 25 MB limit is a practical soft limit, not a guarantee that every file below it will process successfully.

References: pdf-lib PDFPage API and the PDF specification’s CropBox definition.

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