Crop PDF: Trim Margins and Scanner Noise

· PDF Junkie guides

When cropping helps

Scanners add black edges; screenshots include browser chrome. Cropping cleans the frame.

What you can do

  • Define crop boxes per page or uniformly
  • Improve OCR by removing noise at margins
  • Make slides fill the page in print

How to crop

  1. Go to Crop PDF and upload the PDF.
  2. Adjust the crop area in the preview.
  3. Apply and download.
Example: Crop uniform black margins from a 50-page scan batch.
Pro tip: Keep a few pixels of margin so content doesn’t clip at print bleed.

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