Lina Scanner: PDF Scanner, OCR

CommonSource

About this app

📄 Lina Scanner — the premium on-device document scanner that finishes the job in one shot

Receipts, contracts, notes, business cards, whiteboards, any paper — point your camera and Lina Scanner turns it into a cropped, sharpened, searchable document. Cropping, filters, OCR, search, and privacy protection all run entirely on your device, offline. No ads, no sign-up, no cloud upload.

✂️ Automatic edge detection & perspective correction
Finds a document's four corners automatically and straightens a tilted photo into a clean rectangle, like a real scanner. Adjust corners yourself if needed, or keep the full frame uncropped. Auto-crop applies instantly in burst mode.

🎨 9 color filters built for documents
Document B&W (erases shadows), Magic (fixes uneven lighting), Sharpen, Brighten, Whiten, Warm, Cool, Gray, Original. A dim, shadowy photo turns into a crisp document. Remove or reapply filters any time, no damage to the original.

🔍 On-device OCR & full-text search
Recognizes Korean, English, Spanish, and Japanese — pick up to 2 at once for mixed-language documents. Every scan is indexed on-device for instant search, and text exports as a searchable, selectable PDF. Runs automatically right after capture.

🛡️ Automatic personal-info detection & masking
Sensitive numbers like ID, phone, and card numbers are detected in recognized text and hidden automatically. The viewer blurs them reversibly; exporting applies a permanent mask. Toggle visibility per document any time.

🔎 Automatic blur & duplicate detection
Out-of-focus shots and accidental double-captures are flagged automatically. Review everything in Tools and clean up what you don't need.

📁 Clean, folder-based organization
Sort into folders, jump back with Favorites and Recent, drag to reorder pages and folders, merge folders, or duplicate one. Pinch the grid to adjust columns.

📤 Flexible export options
Export as a regular PDF, searchable PDF, plain TXT, or straight to your gallery in JPG or PNG. Choose crop/filter/masking per export, build a filename template, and auto-split large documents.

🧰 A full toolkit
Recognize QR codes and barcodes in a photo, clean up duplicate pages, and keep deleted items in Trash for a period you choose. Exports land in their own vault for easy viewing and sharing.

⚙️ A thoughtfully polished experience
Burst-captured pages process automatically in the background in capture order, and the app slows or pauses if your device gets hot, protecting battery and lifespan. Dark mode, resolution, haptics, and grid columns are yours to tune.

✨ An intuitive, lightweight interface
No bloated ads or decoration — capturing, organizing, and exporting take the fewest taps possible. Long-press to multi-select pages, and drag once to reorder.

📷 Single shots and burst mode
Single-shot for one quick page, or burst mode for a multi-page contract or notebook. Four resolution tiers, and on Android, shutter via volume keys.

💾 Storage at a glance
See exactly how much space originals, cache, exports, and the search index use. Clear the cache instantly, or regenerate deleted previews.

🌏 Multi-language support
Korean, English, Spanish, and Japanese, following your system language or one you lock in.

🔒 Privacy that's actually yours
No sign-up, no ads, no cloud upload. Capture, recognition, search, and privacy protection all finish on your device— nothing is ever sent to a server.

For people like you
· Professionals and business owners scanning contracts, receipts, statements
· Students digitizing notes and handouts into PDFs
· Anyone storing sensitive paperwork safely, or mixing languages in one document
· Anyone seeking an alternative to paid, subscription scanner apps
· Anyone who wants a clean scanner with no ads, no account, fully offline

Document scanner, PDF converter, photo to PDF, OCR text recognition, receipt scanner, contract scanner, offline scan app, privacy-first scanner — Lina Scanner does it all, entirely on your device. Install it now.