Har PDF page = ek slide. Server pe high‑DPI raster + native .pptx (OOXML) — slide size: 16:9, 4:3, ya pehle page ke aspect ke hisaab. PDF.js se preview & page count. Max 80 slides, 25 MB.
Honest mode: Har slide = poori PDF page ki high‑DPI image — isliye photos, charts, diagrams slide par dikhte hain (jaise screenshot). Wo editable text boxes nahi hain; edit ke liye PDF→Word (text) ya OCR alag chahiye.