Starting camera…
Drag the dots onto the corners of the whole A4 sheet, not the document.
Pick a mode at the top of the camera.
For Aadhaar, PAN, driving licence, bank cards. Put the card on a plain table that contrasts with it and scan. No A4 sheet needed: all these cards share one standard size, so the app knows how big to print it.
After the first scan, tap Scan the back. Both sides go on one A4 page, at real size.
When printing, choose Actual size / 100% if your print dialog offers it.
Everything happens on your phone. Nothing is uploaded.
In Safari, tap Share ⎙, then Add to Home Screen.
Open the browser menu ⋮ and tap Install app or Add to Home screen.
It then opens full screen from your home screen, like a normal app, and works offline.
Working…