Crop PDF
Crop PDF pages by trimming margins from any side. Adjust top, right, bottom, and left crop percentages. Free, private, and browser-based.
将文件拖放到此处或 浏览
支持 PDF - up to 100 MB
Tips for cropping PDFs
Uniform cropping
Set all four margins to the same value for an even crop on every side of each page.
Remove headers and footers
Use top and bottom margins to trim away header and footer areas that you don't need.
Widen content area
Crop left and right margins to remove white space and make the content area wider on screen.
Privacy first
All processing happens in your browser. Your PDF is never uploaded to any server.
Frequently asked questions
What does cropping a PDF do?
Cropping a PDF sets the visible area of each page by trimming margins. The content outside the crop area is hidden but not deleted from the file.
Are all pages cropped the same way?
Yes. The same margin percentages are applied to every page of the PDF. Each page is cropped proportionally to its own dimensions.
Can I crop only specific pages?
Currently the tool crops all pages uniformly. To crop specific pages, split the PDF first, crop the relevant parts, then merge them back.
Will cropping reduce the file size?
Cropping changes the visible area (CropBox) but does not remove content from the file. File size may decrease slightly, but the main purpose is to adjust what is visible, not to compress.
Is my PDF uploaded to a server?
No. All processing happens locally in your browser using pdf-lib. Your files never leave your device.