Does cropping a PDF reduce the file size?

Usually not by much. Cropping only changes the visible crop box — the underlying page content, images, and fonts are still stored in the file. If you also need a smaller file, try our PDF Compressor after cropping.

Can I crop only some pages instead of the whole document?

Yes. Choose "Custom range" and enter the page numbers you want to crop — all other pages are left untouched.

What's the difference between the margin and drag modes?

Margin mode trims a fixed distance from each edge, ideal for removing scanner borders or printer margins evenly. Drag mode lets you draw an exact rectangle, which works better for isolating a specific region like a chart or table.

Will cropping change how the PDF looks when reopened in other PDF readers?

Most modern viewers and printers respect the crop box, so the file will look the same everywhere. A handful of older or non-compliant tools may still render the full original page, so it's worth a quick check if the PDF needs to display correctly in a specific niche application.

Can I undo a crop after downloading?

Not directly, since the download is a separate file. Keep your original PDF as a backup — cropping never overwrites it, so you can always re-upload the original and crop again with different values.

Does cropping really delete the content outside the crop area?

No. Cropping only hides content outside the crop box when the file is viewed or printed — the original page data is still embedded in the PDF and can be restored by resetting the crop box. If you need to permanently remove sensitive content, use our PDF Redactor instead, which rasterizes and burns out the selected area so it can't be recovered.