PDF Background Changer

Auto-detect document edges and remove backgrounds from scanned or photographed PDFs

Upload Your PDF File

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Select PDF

100% Private: Everything runs in your browser. No upload to any server.

Original

Preview

New Background Color

Custom color

Detection Sensitivity

Threshold 170

Lower = more aggressive removal (good for dark backgrounds). Higher = conservative (good for light gray backgrounds).

Options

Remove Outer Background (table, floor, hands around page)

Change Paper Color (replace white/gray paper with selected color)

Preserve Images & Colors (skip colorful pixels)

Sharpen Text

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