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.