unpaper ☆

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Description:
Post-processing for scanned/photocopied books

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Productivity

Tags: scanning image-processing documents cli ocr

Install: brew install unpaper

About:
Unpaper is a command-line tool designed for post-processing scanned or photocopied book pages. It removes noise, fixes page skew, and detects page borders to produce cleaner, more readable images. This utility is essential for improving the quality of digitized documents before OCR or archival.

Key Features:

Noise and dust removal
Deskewing and de-warping
Black border detection and removal
Multi-page processing pipeline

Use Cases:

Cleaning up scans of books and documents for OCR
Batch processing of photocopied materials for digital archives

Alternatives:

ImageMagick – More general-purpose image manipulation; Unpaper specializes in cleaning scanned documents.
ScanTailor – GUI-based tool with similar goals; Unpaper is CLI-focused and scriptable.

Version History

Detected	Version	Rev	Change	Commit
Sep 14, 2025 10:36pm		3	VERSION_BUMP	7ae8a22a
Sep 12, 2024 2:23pm		2	VERSION_BUMP	9529a42d