Hey Product Hunt 👋 I'm a solo developer. I kept juggling two apps — one to scan QR codes, another to scan documents — so I built ScanQ to do both in one place. The part I care about most is the document scanner: automatic edge detection plus manual adjust, perspective correction that flattens a page as if shot head-on, and original/grayscale/B&W filters. Multiple shots become one multi-page PDF. There's on-device OCR (Korean + English) to pull text out, and a QR generator too. Everything runs on-device — scan data stays on your phone, nothing is sent to a server. No sign-up. Free (just a little ad). Receipts, business cards, contracts, whiteboards — one photo becomes a clean scan. I'd love your feedback, especially on edge-detection accuracy in tricky lighting. 🙏

ScanQ

Scan QR & barcodes, turn photos into clean scanned PDFs

Scan QR & barcodes, turn photos into clean scanned PDFs