Dynamic Web TWAIN Documentation

• About

  • Features
  • Resources
  • License
  • FAQs
  • Support

• Getting Started

  • HelloWorld
  • Hardware
  • Platform
  • FileTypes

• Features

  • Initialize
  • Input
  • Output
  • Buffer
  • Viewer
  • UI
  • Edit
  • Read Barcode
  • OCR
  • Handle PDF

• Development

  • Angular Integration
  • React Integration
  • Vue Integration
  • Server-side Scripting
  • Professional Service
  • Upgrade Guide
  • About ActiveX
  • Other Topics

• Deployment

  • Server Setup
  • Service Setup

• Troubleshooting

  • How to Debug
  • License Errors
    • Invalid License
    • The current product key does not match the domain
    • Your trial license has expired
    • You have exceeded the number of OCR attempts allowed by the current license
  • Common Errors
    • General failure
    • A connection with the server could not be established
    • HTTP process error
    • HTTP request error
    • Only 24-bit true color bmp and 8-bit gray-scaled image are supported for JPEG compression
    • XMLHttpRequest cannot load XXX
    • Source is connected to the maximum supported number of applications
    • Sequence error
    • Request header field dwt-md5 is not allowed by Access-Control-Allow-Headers in preflight response

• Schedule

  • Stable
  • Beta
  • Developing
  • Proposed
  • To Consider
  • Deprecated
  • Addon

• API Reference

  • Dynamsoft_WebTwainEnv
  • Dynamsoft_Enum
  • WebTwain_Acquire
  • WebTwain_Buffer
  • WebTwain_Viewer
  • WebTwain_Edit
  • WebTwain_IO
  • WebTwain_Util
  • Addon_BarcodeReader
  • Addon_Camera
  • Addon_OCR
  • Addon_OCRPro
  • Addon_PDF
  • Addon_Webcam
  • Dynamsoft_FileUploader