NetStandard: Missing content due to empty glyph outlines in embedded TrueType font subsets.
Workaround 1
Fully embed the fonts in the result PDF document:
PdfFormatProvider pdfFormatProvider = new PdfFormatProvider();
pdfFormatProvider.ExportSettings.FontEmbeddingType = FontEmbeddingType.Full;Workaround 2
Switch to a .NET Framework project environment and use the .NET Framework PdfProcessing packages.
On the other hand, the PDF is successfully opened by browsers and most PDF viewers.
When a document containing a SignatureField is exported with the IsEncrypted property set to true, a not set UserPassword is required to open it, which makes it impossible to be opened. An InvalidOperationException is thrown with the message "Password is not correct." when importing with PdfProcessing; Adobe Acrobat also doesn't recognize the password.
Workaround: Exporting with AES256 encryption does not have this problem:
provider.ExportSettings = new PdfExportSettings
{
IsEncrypted = true,
EncryptionType = EncryptionType.AES256
};
PdfStreamWriter stream-copy page splitting performance is much slower than expected in some cases. When working with larger PDF files, the processing time can increase a lot and cause noticeable delays.
The exception can be suppressed using the Exception Handling mechanism of PdfProcessing.
type of shading to be used, the geometry of the area to be shaded, and the geometry of the gradient fill. Various shading types are available, depending on the value of the dictionary’s ShadingType entry:
- Coons patch meshes (type 6) construct a shading from one or more color
patches, each bounded by four cubic Bézier curves.
When using Telerik Document Processing (PdfProcessing) for embedding Factur-X invoices, the produced PDF document is Non‑compliant with PDF-AF / Factur‑X according to the following validator:
https://www.superpdp.tech/outils/validateur-facture-electronique/
Implement the Exponential Interpolation Function in PdfProcessing. Currently, NotSupportedFunctionTypeException is thrown with a message "Function type 2 is not supported."
After merging several PDF documents, some pages are blank indicating the following error:
