| Feature | Old Scan (e.g., Sadiq) | Modern Unicode PDF (e.g., Madinah) | App-Generated PDF | | :--- | :--- | :--- | :--- | | | Poor, often blurred | High, vectorized | Variable, depends on device | | Searchable | No (image only) | Yes (if OCR processed) | Yes | | Arabic Facing | Rare | Standard | Often optional | | File Size | Large (20-50 MB) | Moderate (5-15 MB) | Small (1-5 MB per Juz) | | Reliability | Contains typographical errors | High (scholarly reviewed) | Medium (app-dependent) |