Release Sept 2026

libraries/radpdfprocessing/concepts/fonts.md

@@ -109,7 +109,7 @@ All fonts that are not included in the 14 standard ones must be **embedded** in
 
 ### Registering a Font
 
-If you want to use a font that is not part of the standard ones, register it using the `RegisterFont()` method of the `FontRepository` static class. The method requires four parameters: `FontFamily`, `FontStyle`, and `FontWeight` objects describing the font, and a byte array containing the raw font data.
+If you want to use a font that is not part of the standard ones, register it using the `RegisterFont()` method of the `FontsRepository` static class. The method requires four parameters: `FontFamily`, `FontStyle`, and `FontWeight` objects describing the font, and a byte array containing the raw font data.
 
 **Example 1** demonstrates how to use the `RegisterFont()` method.
 
@@ -121,6 +121,23 @@ If you want to use a font that is not part of the standard ones, register it usi
 
 <snippet id='pdf-register-font-net-standard'/>
 
+### Registering a Font from a Stream
+
+Use the `RegisterFont()` overload that accepts a `Stream` to avoid loading an entire font file into a `byte[]`. The stream must be readable and seekable.
+
+RadPdfProcessing starts reading at the stream's current position and reads font data lazily.
+
+<snippet id='pdf-register-font-stream'/>
+
+The example retains ownership of `fontStream` and disposes it after it no longer uses the registered font.
+
+Use the `leaveOpen` parameter to control stream ownership:
+
+* Set `true` to retain stream ownership. Keep stream open and usable while registered fonts are in use.
+* Set `false` to transfer stream ownership to RadPdfProcessing. Do not use or dispose stream after registration.
+
+>important `ClearRegisteredFonts()` clears the registered font cache. Font objects created before the call remain usable. The method buffers required data and closes library-owned streams.
+
 ### Creating a Font
 
 >tip Each registered font can be obtained from the font repository as a `FontBase` object and applied to a [TextFragment]({%slug radpdfprocessing-model-textfragment%}) through its `Font` property.

libraries/radpdfprocessing/cross-platform/fonts.md

@@ -45,6 +45,20 @@ You can find a detailed `FixedExtensibilityManager` and `FontsProvider` implemen
 
 <snippet id='libraries-pdf-cross-platform-fonts-set-fontsprovider'/>
 
+### Providing Font Streams
+
+To provide fonts stored outside system font directories, override `FontsProviderBase.GetFontStream(FontProperties)`. The method must return a readable, seekable stream.
+
+This approach lets RadPdfProcessing read font data lazily instead of requiring the provider to load the complete font into a `byte[]`.
+
+<snippet id='libraries-pdf-cross-platform-fonts-providing-font-streams'/>
+
+Override `GetFontData(FontProperties)` because it is abstract. Return `null` when the provider serves all fonts through `GetFontStream()`.
+
+RadPdfProcessing owns the stream that `GetFontStream()` returns. Return a new stream for every request. Do not dispose the stream after returning it.
+
+Providers that override only `GetFontData(FontProperties)` remain supported. The base `GetFontStream()` method creates a stream from the returned byte array.
+
 ## See Also
 
 * [Standard Fonts]({%slug radpdfprocessing-concepts-fonts%})
@@ -56,4 +70,3 @@ You can find a detailed `FixedExtensibilityManager` and `FontsProvider` implemen
 * [Validating Fonts when Using Telerik Document Processing]({%slug validating-fonts-pdf-document-processing%})
 * [Preserving Original Bold, Italic and Regular Fonts When Exporting PDF Documents Using PdfProcessing in .NET Standard]({%slug pdfprocessing-prevent-font-conversion-embedding-fonts%})
 * [Resolving Font Differences Between Client and Server-Side PDF Generation in Telerik Document Processing]({%slug consistent-pdf-font-formatting%})
-

libraries/radpdfprocessing/model/textfragment.md

@@ -43,7 +43,7 @@ The `TextFragment` class in [RadPdfProcessing]({%slug radpdfprocessing-overview%
 |-----------------------|-------------------------------------------------------------------------------------------------|
 | **Clone** (*Introduced in Q2 2025*)            | Creates a deep copy of this document element.                                                  |
 
->note To use a font that is not part of the [standard fonts]({%slug radpdfprocessing-concepts-fonts%}#standard-fonts), register it with the [RegisterFont()]({%slug radpdfprocessing-concepts-fonts%}#registering-a-font) method of the `FontRepository` static class.
+>note To use a font that is not part of the [standard fonts]({%slug radpdfprocessing-concepts-fonts%}#standard-fonts), register it with the [RegisterFont()]({%slug radpdfprocessing-concepts-fonts%}#registering-a-font) method of the `FontsRepository` static class.
 
 >important In **.NET Standard/.NET (Target OS: None)** environments, fonts beyond the [14 standard ones]({%slug radpdfprocessing-concepts-fonts%}#standard-fonts) require a [FontsProvider implementation]({%slug pdfprocessing-implement-fontsprovider%}) to be resolved correctly.