Edit
Crop PDF Pages
Cut away margins or crop pages to a region.
Processed locally — your files never leave your device
How to use Crop PDF
- 1
Open your PDF — the first page appears with a draggable crop frame.
- 2
Drag the corners and edges to frame what you want to keep, or click Auto-detect to snap to the content.
- 3
Choose the scope: all pages, odd, even, or just the current page.
- 4
Click Crop and download the trimmed document.
About this tool
Cropping fixes the gap between how a PDF was made and how it's used: scans with thick black borders, journal pages with huge margins eating your tablet screen, slides exported with letterboxing, or a figure you want to pull cleanly out of a page. Drag the frame over what matters and everything outside it disappears.
Auto-detect does the fiddly part for you — it scans the page's pixels, finds the bounding box of the actual content, and snaps the frame to it with a small comfort margin. It's the one-click fix for "trim all this whitespace". The odd/even scopes handle book scans, where left and right pages need mirrored crops: run the tool twice, once per side.
Technically, cropping sets each page's CropBox — the rectangle viewers display. The content outside isn't deleted, just hidden, which means the operation is fully reversible by another crop and never damages quality. It also means cropping is not redaction: hidden content can be recovered by anyone with PDF tools, so never use cropping to remove sensitive information.
Frequently asked questions
Is cropping reversible?
Yes. Cropping changes which area viewers show — the full original content stays in the file. Re-crop with a larger frame to bring hidden areas back.
Can I use cropping to hide confidential information?
No — and this matters. Cropped-out content still exists inside the file and can be restored by anyone. For permanent removal you need true redaction, which this tool deliberately doesn't claim to do.
How does auto-detect work?
It renders the page, finds every pixel that isn't near-white, and frames their bounding box with a little padding. It's ideal for scans with dark borders and documents with oversized margins.
My pages have different sizes — what happens?
The crop frame is applied to each target page and clamped to that page's own bounds, so smaller pages aren't cropped past their edges.