| Version | Change log |
| 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 |
| Dynamic Web TWAIN 18.5.1 Oct 22, 2024 |
Improvements: Enhanced product security. Updated third-party libraries to enhance security. Enhanced compatibility with the HTTP Content-Security-Policy style-src directive. Improved scanner compatibility. Improved the internal algorithms of the IsBlankImageAsync API. Added a configuration to file-saving APIs that allows specifying whether to automatically create directories when the provided path does not exist. This option is enabled by default, and preserves existing behavior. Bug fixes: Fixed an issue where removing localStorage causes additional unexpected deletions under certain conditions. Fixed an issue where FTP upload APIs fail to respond for large file uploads. Fixed an issue where HTTP upload APIs do not return a response to server errors. Fixed a sequence issue when saving TIFF files under certain conditions. Reverted to the previous version of the ChangeBitDepth API algorithm when converting images to black and white. Fixed an issue where save-related APIs do not enter their failure callbacks upon failing to save under certain conditions. Fixed an issue where the file selection dialog fails to load files from manually entered file names Fixed an issue where right clicking on a selection of multiple images in the viewer de-selects all but one image. Fixed an issue where the print API prints two images on the same page under certain conditions. |
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