GroupDocs.Conversion for .NET 26.3 Release Notes
There are 14 features, improvements, and bug fixes in this release.
This release broadens format coverage and conversion fidelity—adding native ICS conversion, fixing email, MSG, EML, DCM/JFIF, HTML, and PDF/A issues, and introducing full font‑substitution support for Publisher, Presentation, and Note documents. It also strengthens stability by resolving scaling, recognition‑mode, memory‑leak, and resource‑handling bugs.
Full list of changes in this release
| Key | Category | Summary |
|---|---|---|
| CONVERSIONNET-8259 | Feature | Convert from ICS file |
| CONVERSIONNET-8205 | Improvement | Add custom font folders, default font, and font substitution support for Publisher documents |
| CONVERSIONNET-7977 | Bug | .eml to pdf conversion issue - incompatible unit types |
| CONVERSIONNET-8204 | Bug | PresentationLoadOptions and NoteLoadOptions missing IFontSubstituteLoadOptions interface implementation |
| CONVERSIONNET-8207 | Bug | Memory leak when converting PDF to WordProcessing formats except DOC/DOCX |
| CONVERSIONNET-8208 | Bug | WhitelistedResources not respected when converting Web document with WebLoadOptions.UsePdf = true |
| CONVERSIONNET-8209 | Bug | CustomCssStyle and Encoding not applied when converting Web document with WebLoadOptions.UsePdf = true |
| CONVERSIONNET-8218 | Bug | Email with images conversion - the embedded image is converted as an attachment |
| CONVERSIONNET-8223 | Bug | Unable to load one or more of the requested types when converting HTML to PDF |
| CONVERSIONNET-8226 | Bug | Conversion to DCM and JFIF fails with “archive entry was compressed using an unsupported compression method” |
| CONVERSIONNET-8228 | Bug | Converting PDF to wordprocessing PdfRecognitionMode.Flow produces identical output to TextBox |
| CONVERSIONNET-8229 | Bug | Conversion from Html and Html to Tiff throws System.ArgumentOutOfRangeException : Invalid page index. (Parameter ‘pageIndex’) |
| CONVERSIONNET-8231 | Bug | PDF/A-1A conversion produces non-compliant PDF due to invalid ToUnicode tables |
| CONVERSIONNET-8234 | Bug | ResizeMode ScaleToFit not working correctly when both PageOrientation and PageSize are set |
Major Features
ICS Conversion: Adds native support for converting iCalendar (.ics) files, allowing users to transform calendar data directly into PDF, DOCX, and other target formats without external tools.
Enhanced Font Substitution: Provides full font‑substitution for Publisher, Presentation, and Note documents, plus custom font folder and default‑font configuration, ensuring accurate rendering when original fonts are missing.
Improved Email & Messaging Conversion: Fixes special‑character rendering in MSG‑to‑PDF, corrects embedded image handling in email conversions, and resolves .eml to PDF unit‑type errors, delivering reliable conversion of Outlook messages and email files.
PDF/A‑1A Compliance & Recognition Mode Fixes: Corrects invalid ToUnicode tables in PDF/A‑1A output and aligns PdfRecognitionMode.Flow behavior with expected text flow, guaranteeing standards‑compliant PDFs and consistent text extraction.
Stability & Layout Enhancements: Addresses scaling issues with ResizeMode.ScaleToFit, resolves HTML‑to‑PDF loading errors, fixes DCM/JFIF conversion failures, and eliminates memory leaks during PDF‑to‑WordProcessing conversions, resulting in more stable and predictable conversion workflows.
Public API and backward incompatible changes
No existing public API has been removed or changed in a breaking way. Existing applications will continue to work unchanged.