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.