Drop caps are large decorative first letters that span multiple lines.
Due to PDF coordinate sorting, they often appear after the text they
belong to. This change:
- Detects drop caps: single uppercase char with font size >= 2.5x base
- Finds the paragraph start (first lowercase-starting line after header)
- Merges the drop cap with that line
Example: "G" + "lenair brings..." -> "Glenair brings..."
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Major changes:
- Switch from lopdf.extract_text() to position-aware extraction
- Text is now sorted by visual reading order (top→bottom, left→right)
- Fixed font size calculation to account for text matrix scaling
- Headers are now detected based on font size ratios
- Skip very short text (≤3 chars) for header detection to avoid drop caps
This significantly improves output quality for PDFs with complex layouts.
Before: Title appeared at end, no structure detected
After: Correct reading order, headers marked with # syntax
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
