Optical Character Recognition (OCR) analyzes scanned raster bitmaps, recognizing character glyphs, line baselines, and paragraph boundaries, and injecting an invisible, searchable text layer directly beneath the image canvas. Adding a searchable text layer allows users to highlight, search (`Ctrl+F`), and copy text from scanned paper contracts, historical books, and photo receipts while preserving the original scanned visual appearance. Mandatory for legal discovery archiving, government record compliance, and digital library preservation.