How to use Crop PDF
- Select the PDF.
- Drag the box or draw a new one around the area to keep.
- Choose all pages or just the current page, then click “Crop PDF”.
Lossless cropping
bopdf sets the PDF crop box, so pages are trimmed without re-rendering: text stays sharp and selectable and the file barely changes in size. Because cropping hides rather than deletes, content outside the box is still in the file — use Redact PDF if it must be removed.
🔒 Your files never leave your device
bopdf processes your documents locally with JavaScript (pdf-lib and Mozilla pdf.js) inside your browser tab. Your PDF is never uploaded, stored or seen by us — you can even disconnect from the internet after the page loads and the tool keeps working. When you close the tab, everything is gone.
Frequently asked questions
Can I crop just one page?
Yes, choose “Current page only”.
Does cropping reduce quality?
No, nothing is re-compressed.
Are my files uploaded to a server?
No. Everything happens in your browser on your own device. Files are never sent over the internet, which makes bopdf suitable for confidential documents.
Is there a file size limit?
There is no fixed limit, but very large files (hundreds of MB) depend on your device memory. On phones, files up to about 100 MB usually work well.