Dynamic Web TWAIN Releases

Dynamsoft CorporationDocument Recognition ToolsJavaScript
Version 19.4.2 (Jul 30, 2026)(6)

Learn what's new across releases, with details of features, enhancements, and resolved issues.

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Dynamic Web TWAIN 19.4.2Jul 30, 2026
Features
  • Updated third-party libraries to enhance security.
Fixes
  • Fixed an issue occurring when IfCheckDCP was enabled.
  • Fixed an issue where OnPostLoad was not triggered when using LoadImageFromBase64Binary() and LoadImageFromBinary().
Dynamic Web TWAIN 19.4Jun 11, 2026
Features
  • Added support for writing PDF as PDF/A-3b.
  • Added maxThreads param for loadFromLocalStorage() and saveToLocalStorage() to improve performance.
  • Added outputInfo for startScan().
  • Added an error code for failure to load password-protected PDFs.
  • Updated third-party libraries to enhance security.
  • Improved Dynamic Web TWAIN Service to make it compatible with the previous major version’s JavaScript.
  • Packaged the macOS version of Dynamic Web TWAIN Service as a universal binary.
  • Removed the major version restriction using annual full licenses.
  • Added mechanism to infer ResourcePath from the script path when not specified.
  • Improved the triggering of OnTopImageInTheViewChanged.
  • Improved the error message if the JavaScript version does not match the service version.
  • Improved the REST API:
    • Added service version info for GET /server/version.
    • Added PATCH /storage/documents/{documentuid} to modify document metadata.
    • Added GET /device/scanners/jobs/{jobuid}/content to retrieve page data concurrently.
Fixes
  • Fixed loading of interlaced PNGs.
  • Fixed an issue where the HTTP form fields are lost using segmented upload with large files.
Dynamic Web TWAIN 19.3.3Apr 16, 2026
Features
  • Updated third-party libraries to enhance security.
Fixes
  • Fixed a COMMONJS_VARIABLE_IN_ESM warning using Vite 8+.
Dynamic Web TWAIN 19.3.2Mar 5, 2026
Features
  • Updated third-party libraries to enhance security.
Dynamic Web TWAIN 19.3.1Feb 11, 2026
Features
  • Improved the local network access check. Screenshots have been moved to a separate web page (which lists UI differences across browsers/versions) instead of being embedded directly in the dialogs.
  • Updated third-party libraries to enhance security.
Fixes
  • Fixed an issue with local network request parameters that caused connection failures after installation (affecting only Safari 26.2+).