| Version | Change log |
| Dynamic Web TWAIN 19.3.1 Feb 11, 2026 |
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. Fixed an issue with local network request parameters that caused connection failures after installation (affecting only Safari 26.2+). |
| Dynamic Web TWAIN 19.1 May 7, 2025 |
New Features: Added a new method getVisiblePagesInfo() to return the information of visible pages in a viewer. It is useful to add custom elements. Improvements: Added support for reading special TIFFs (e.g. 4-bit RGB interleaved, old-style JPEG compression) on Windows. Added support for keeping the PDF forms when saving. Updated the way of checking CSS file integrity from fetching to examining the effectiveness of CSS rules. Updated the format of license expiry date to avoid misunderstanding. Breaking Changes: Updated the names of headers for the REST API. X-DICS-LICENSE-KEY -> DWT-PRODUCT-KEY X-DICS-DOC-PASSWORD -> DWT-DOC-PASSWORD Bug Fixes: Fixed a bug that when preserveUnmodifiedOnSave is set to true, CopyToDocumentAsync() will fail. Fixed a bug that the width and height set in percentage using the Web TWAIN object is not effective after resizing. |
| Dynamic Web TWAIN 19.0 Apr 1, 2025 |
New Features: Greatly expanded support for the RESTful Dynamic Web TWAIN Service. PDF Handling: Added new PDF Rasterizer Add-On API preserveUnmodifiedOnSave to preserve the size of text-based PDFs when loading and re-saving without modifying the pages with DWT. Added new PDF Rasterizer Add-On API IsRasterizationRequired(). This API returns true if the PDF Rasterizer Add-On is needed to process the PDF. Note that this requires a license for the PDF Rasterizer Add-On. Cross-platform support: Added macOS and Linux platform support for DWT Barcode Reader Add-On version 9.6. Error messages: Added more informative error messages with the new ErrorCause API. Keyboard accessibility: Added Tab key keyboard navigation in the DWT Viewer. The browser now shows a focus outline on the Viewer upon tabbing into the Viewer, which can be disabled with the new {WebTwainObject}.Viewer.disableFocusOutline API. (true/disabled by default) Improvements: Security enhancements: updated third-party libraries to enhance security. Image rasterization logic: when both ReaderOptions.renderOptions.maxWidth/ ReaderOptions.renderOptions.maxHeight and resolution are set, if the dimensions of the rendered image exceed the maximum width and height, use the resolution applied during the image rendering process rather than the set resolution. New Dynamic Web TWAIN Service installation path for Windows: moved installation out of SysWOW64 and System32 on Windows to prevent rare false positive antivirus scans. New 64-bit system-wide installations: C:Program FilesDynamsoft (x86)Dynamic Web TWAIN Service 19 New 32-bit system-wide installation location: C:Program FilesDynamsoftDynamic Web TWAIN Service 19 Changed ErrorString messages associated with ErrorCode -2003 for HTTPUpload-related APIs to include HTTP codes in the form of HTTP process: {message}({HTTP status code}), e.g. HTTP process: OK(200). This change applies to ErrorString for the following APIs: {WebTwainObject}.HTTPUpload() {WebTwainObject}.HTTPU |
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