ScanGo: PDF Scanner & OCR

ScanGo — Scan PDF, OCR, sign & stamp in one app. The document scanner you actually want: fast, lightweight, no watermarks, no forced sign-up. Every feature is free. The free version shows one small banner ad at the bottom — purchase the Lifetime Unlock to remove it permanently. ✨ SCAN & EDIT • One-tap scan with auto edge detection + auto-capture when the paper is steady • ID card scan (front + back) merged onto a single A4 sheet, print-ready • 4-corner crop + Perspective tool to fix camera-angle distortion • 7 smart filters: Auto, Original, B&W, Gray, Sharp, Bright, Clean • One-tap Enhance, one-tap Clean, manual Eraser for stains • Pinch zoom in Crop & Clean tabs 📝 SIGN & STAMP • Scan your real signature/stamp from paper — original ink colour kept (black, blue, red), paper background removed • AI background removal (Vision on iOS 17+ / ML Kit Subject Segmentation on Android) + magic-wand tap-to-erase + brush refine • Draw signatures by hand when you don't have one on paper • Built-in red approval stamps: APPROVED, COPY, PAID, CONFIDENTIAL — or type your own text • Signature & stamp library — save once, reuse anytime • Place multiple marks per page, drag and pinch-to-scale • Multiply-blend rendering looks like real ink soaked into the paper 🔍 OCR & EXPORT • Vietnamese OCR with diacritics, fully offline via Google ML Kit • Smart rename from OCR'd content (no more "Document dd/MM") • Export PDF at 3 compression tiers: Compressed / Standard / High • 🔒 Password-protect PDFs at export (AES-128) — opens in any standard PDF reader • Export JPG; share to any installed app (Zalo, Messenger, Drive, Email) 🔒 CLEAN & PRIVATE • Unlimited scans, no watermark on exports • No internet required, no document uploads • OCR + AI background removal run on-device — your documents stay on your device • No account required, no content tracking 💎 LIFETIME UNLOCK — OPTIONAL • Removes banner ads permanently • One-time payment, no subscription, no hidden fees ⚡ SPEED • Sub-1-second cold start on mid-range devices • Image processing runs in background isolates — no UI jank • Open → capture → done. No splash. No full-screen ads 📞 CONTACT Developed by Nexttech Smart Solutions Company Limited. Website: nextsmart.vn We read every piece of feedback and bug report.