What’s new in this release

Feature ID Description
CONVERSIONNET‑8090 Disable external asset loading in email files – Adds the ability to block loading of external resources (images, stylesheets, etc.) when converting email messages. This improves security and can speed up conversion.
CONVERSIONNET‑8124 Full font embedding for Word → PDF – Introduces an option to embed the complete set of fonts used in a WordProcessing document when converting to PDF, guaranteeing identical text rendering on any system.

Using the new API

Skipping external resources in email conversion

var loadOptions = new EmailLoadOptions
{
    SkipExternalResources = true
};

When SkipExternalResources is set to true, all external assets are ignored.

Whitelisting selected resources

var loadOptions = new EmailLoadOptions
{
    SkipExternalResources = true,
    WhitelistedResources = { "trusted-domain.com", ".jpeg", ".png" }
};

Resources that match an entry in WhitelistedResources are loaded normally; everything else remains blocked.

Embedding full fonts in PDF conversion

var convertOptions = new PdfConvertOptions();
convertOptions.EmbedFullFonts = true;

Setting EmbedFullFonts to true forces the converter to embed the complete font files in the resulting PDF.

Fixes and enhancements

Issue ID Type Description
CONVERSIONNET‑8108 Bug Conversion of AI, PSD, PSB files to FODP/POT failed.
CONVERSIONNET‑8109 Bug Conversion of AI, PSD, PSB files to XPS failed.
CONVERSIONNET‑8024 Bug The order of attachment icons in generated PDFs was incorrect.
CONVERSIONNET‑8131 Bug IConverterListener.Started() was not invoked at the start of the conversion process.

These fixes restore full compatibility for Adobe Illustrator, Photoshop, and large Photoshop (PSB) source files, correct PDF attachment rendering, and ensure listener callbacks fire as documented.

How to get the update

  • NuGet – Choose the package that matches your target framework:

    For .NET 6+ (cross-platform):

    dotnet add package GroupDocs.Conversion --version 25.12

    For .NET Framework 4.6.2+:

    dotnet add package GroupDocs.Conversion.NETFramework --version 25.12

    Since version 25.1.0, the library has been split into two separate packages to better support each platform.

  • Direct download – Download the compiled assemblies for .NET from the official release page:
    https://releases.groupdocs.com/conversion/net/25.12/

Resources