PDF Scanner App

Create high-quality, searchable PDFs from any document. AI-powered processing with compression options, archival formats, and enterprise-grade security.

Download on the App Store

How PDF Scanner App Works

When you scan a document with ScanLens, your iPhone camera captures a high-resolution image that goes through our advanced processing pipeline. The app automatically detects document edges using computer vision algorithms, corrects perspective distortion, and enhances the image for optimal readability.

Our AI-powered image processing removes shadows, adjusts contrast, and sharpens text to produce crisp, professional-looking scans. The processed image is then converted into a PDF document that maintains the highest possible quality while keeping file sizes manageable.

Unlike simple photo-to-PDF converters, ScanLens understands document structure. It recognizes headers, paragraphs, and tables, preserving the logical flow of your documents. This intelligent processing ensures your scanned PDFs look as good as—or better than—the original paper documents.

PDF Scanner Compression and Quality Options

Every scanning situation is different. Sometimes you need pixel-perfect archival quality; other times, you need a small file for quick email sharing. ScanLens gives you complete control over the quality-size tradeoff with three compression presets:

Smart Compression Technology

ScanLens analyzes each page to determine the optimal compression settings. Text-heavy documents use different algorithms than image-rich pages, ensuring you always get the best results.

Create Searchable PDFs with PDF Scanner App

One of the most powerful features of ScanLens is its ability to create fully searchable PDFs. Our Optical Character Recognition (OCR) technology extracts text from your scanned images, embedding it invisibly within the PDF file.

This means you can search for any word or phrase within your scanned documents using any PDF reader. Looking for that specific clause in a 50-page contract? Just use Ctrl+F (or Cmd+F) and find it instantly. No more scrolling through pages manually.

PDF Scanner OCR Language Support

ScanLens OCR supports over 50 languages, including complex scripts like Chinese, Japanese, Korean, Arabic, and Hebrew. The recognition engine is trained on millions of documents, achieving 99.5% accuracy on printed text and impressive results even with handwritten notes.

For documents containing multiple languages, ScanLens automatically detects and processes each language appropriately, ensuring accurate text extraction regardless of the content mix.

PDF/A Archival Format in PDF Scanner App

For documents that need to remain accessible for years or decades, ScanLens supports the PDF/A archival format. PDF/A is an ISO-standardized version of PDF designed specifically for long-term digital preservation.

Unlike regular PDFs, PDF/A documents are self-contained. All fonts, color profiles, and metadata are embedded within the file, ensuring the document will display identically on any system, now or in the future. This makes PDF/A the preferred format for legal archives, medical records, and government documents.

When to Use PDF/A Format for Scanned Documents

PDF Scanner Security Features

Protecting sensitive documents is paramount. ScanLens provides multiple layers of security to keep your PDFs safe from unauthorized access.

PDF Password Protection in Scanner App

Add password protection to any PDF with a single tap. ScanLens uses AES-256 encryption—the same standard used by banks and governments—to ensure your documents remain private. You can set separate passwords for opening the document and for editing or printing.

On-Device PDF Processing

Unlike some scanner apps that upload your documents to cloud servers for processing, ScanLens performs all scanning, OCR, and PDF creation directly on your iPhone. Your sensitive documents never leave your device unless you explicitly choose to share or backup them.

Privacy First

ScanLens has no ads, no tracking, and no data collection. Your documents are your business, and we keep it that way.

PDF Scanner Export and Share Options

Once your PDF is ready, ScanLens makes it easy to get it where it needs to go. Export directly to your favorite cloud storage services, share via email or messaging apps, or save locally to your device.

PDF Scanner Export Options

For business users, ScanLens also supports automated workflows through iOS Shortcuts, enabling you to create custom scanning and filing routines that match your specific needs.

Frequently Asked Questions

What PDF formats does ScanLens support?

ScanLens creates standard PDF files compatible with all PDF readers. It also supports PDF/A format for long-term archival, ensuring your documents remain accessible for years to come. You can choose between standard PDF and PDF/A when creating or exporting your documents.

Can I create searchable PDFs with ScanLens?

Yes, ScanLens uses AI-powered OCR to extract text from scanned documents, making your PDFs fully searchable. The OCR runs automatically during scanning, and the extracted text is embedded in the PDF so you can search, copy, and select text in any PDF reader.

How does PDF compression work in ScanLens?

ScanLens offers multiple compression levels: High Quality (minimal compression for archival), Balanced (good quality with 40-60% size reduction), and Maximum Compression (smallest file size for sharing). The app uses intelligent algorithms that apply different compression strategies to text and images within the same document.

Can I password protect my PDFs?

Yes, ScanLens allows you to add AES-256 password protection to your PDFs. You can set a password required to open the document, and optionally a separate password for editing or printing permissions. This enterprise-grade encryption keeps your sensitive documents secure.

What's the maximum number of pages I can scan into one PDF?

ScanLens Pro allows unlimited pages per PDF document—scan entire books or lengthy contracts without restrictions. The free version supports up to 10 pages per document, which covers most everyday scanning needs like receipts, forms, and short documents.

Start Creating Professional PDFs Today

Join 2M+ users who trust ScanLens for their document scanning needs. Free to download.