Question 1

How does margin detection work?

Accepted Answer

Each page is rendered to a canvas. The tool scans pixels row/column to find where content starts, determining the white margin boundaries.

Question 2

Can I adjust the crop sensitivity?

Accepted Answer

Yes, choose from Minimal, Light, or Medium presets to control how aggressively margins are cropped.

Question 3

Is it secure?

Accepted Answer

Yes, all processing happens in your browser using pdf-lib and canvas. No files leave your device.

✂️ Crop PDF Margins

❓ Frequently Asked Questions