Google Sheets

Google Sheets Setup

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Basic
Basic
AI AI Enhanced
Fast basic text parsing
📷

Take a photo or upload receipt

Click here to select an image

✅ Supports iPhone HEIC photos


Receipt preview

Processing your receipt...

Receipt Details


System Architecture

Receipt Scanner uses a modern cloud-based architecture for scalable and reliable receipt processing.

Technology Stack

Frontend Components

  • Tesseract.js 4.1.1: Client-side OCR processing for text extraction
  • HEIC2Any 0.0.4: iPhone HEIC photo conversion to JPEG
  • Vanilla JavaScript: No framework dependencies for fast loading
  • CSS3 Animations: Smooth gradients and micro-interactions

Backend Services

  • Vercel Serverless: Auto-scaling API endpoints
  • Google Sheets API v4: Direct spreadsheet integration
  • Google OAuth 2.0: Secure authentication flow
  • AI Processing API: Advanced receipt parsing and categorization

API Endpoints

Core Processing

  • /api/parse-receipt - AI-powered receipt text parsing and categorization
  • /api/google-auth - Initiate Google OAuth authentication flow
  • /api/google-callback - Handle OAuth callback and token exchange

Google Sheets Google Sheets Integration

  • /api/google-sheets-list - Retrieve user's Google Sheets list
  • /api/google-sheets-export - Export receipt data to selected sheet

Data Processing Pipeline

Stage 1: Image Processing

Images are processed client-side for privacy. HEIC photos from iPhones are automatically converted to JPEG format for compatibility.

Stage 2: OCR Extraction

Tesseract.js performs optical character recognition in the browser, extracting raw text from receipt images.

Stage 3: AI Enhancement (Optional)

When AI mode is enabled, extracted text is sent to our processing API which uses machine learning models to:

  • Identify store names and locations
  • Parse dates and times accurately
  • Extract individual items with prices
  • Categorize purchases automatically
  • Calculate totals and tax amounts

Security & Privacy

Data Protection

  • Local Processing: OCR runs entirely in your browser
  • HTTPS Encryption: All API communications are encrypted
  • No Storage: Images are not permanently stored on servers
  • OAuth 2.0: Secure Google account integration

Google Sheets Google Sheets Access

The application only requests the minimum necessary permissions to read your sheets list and write receipt data. Your Google account credentials are never stored.

Browser Compatibility

Supported Browsers

  • Chrome 80+: Full feature support including camera access
  • Firefox 75+: Complete functionality with OCR processing
  • Safari 13+: iOS and macOS support with HEIC conversion
  • Edge 80+: Full compatibility on Windows devices

Mobile Support

Optimized for mobile devices with responsive design and camera integration for receipt capture on-the-go.

Deployment Architecture

Hosting & CDN

  • Vercel Edge Network: Global CDN for fast loading times
  • Serverless Functions: Auto-scaling backend processing
  • Environment Variables: Secure API key management
  • Build Optimization: Minified assets and tree shaking