How Auto-Detection Technology Works for Label Cropping

The Algorithm

PDF4u analyses the PDF page structure — white-space bounding boxes, border lines, and barcode positioning — to determine where each label starts and ends. No manual selection needed.

Supported Formats

• 2-up (2 labels per A4)
• 4-up (4 labels per A4)
• Full-page single labels
• Mixed formats in the same PDF

Try PDF4u Auto Detect — zero configuration required.