docs: Upri resource trimming

build/cSpell.json

@@ -162,6 +162,7 @@
 	"Udemy",
 	"UNOB",
 	"uitest",
+	"upri",
 	"userprofile",
 	"winui",
 	"xhdpi",

doc/articles/features/upri-trimming.md

@@ -0,0 +1,24 @@
+---
+uid: Uno.Features.StringResourceTrimming
+---
+
+# String Resource Trimming
+
+String resource trimming is an optional feature used to reduce the final payload size of an Uno Platform application by removing unused localization languages throughout the app.
+
+This feature is currently available for WebAssembly projects.
+
+## Using String Resource Trimming
+
+To enable resources trimming, you need to declare which culture(s) your application uses. For example, in your csproj add:
+
+```xml
+<ItemGroup>
+    <UnoSupportedLanguage Include="en-US" />
+    <UnoSupportedLanguage Include="fr-CA" />
+</ItemGroup>
+```
+
+You do not need to include parent cultures (`en` and `fr` in the previous example), they are automatically kept because they may be used as a fallback.
+
+Make sure to update [Uno.Wasm.Bootstrap](https://www.nuget.org/packages/Uno.Wasm.Bootstrap) to the latest 7.0.x or 8.0.x version.

doc/articles/toc.yml

@@ -238,6 +238,8 @@
           href: guides/profiling-applications.md
         - name: IL Linker for WebAssembly
           href: xref:uno.articles.features.illinker
+        - name: Working with String Resource Trimming
+          href: features/upri-trimming.md
         - name: Working with XAML Trimming
           href: features/resources-trimming.md