Highlight Texts for Debugging

IronOCR includes built-in support to visually highlight OCR-detected elements (characters, words, lines, or paragraphs) on images or pages, and export them as PNGs for debugging.

• OCR-based region detection replaces manual rectangle definitions
• HighlightTextAndSaveAsImages(ocr, prefix, highlightType) overlays red boxes around detected elements - paragraphs, lines, words, or characters - and saves each page as an image.
• Uses ResultHighlightType to choose what to highlight: Character, Word, Line, or Paragraph.
• Handles detection and drawing internally - much simpler than manually specifying rectangle coordinates.

Optional Manual Approach via StampCropRectangles

If you want to manually handle bounding boxes from OCR results:

• result.Words (or .Lines, .Paragraphs) yields collections whose elements expose X/Y/Width/Height for each detected region.
• StampCropRectanglesAndSaveAs(...) visualizes those rectangles and writes images to disk