FrostedGlassView

A view that blurs whatever sits behind it, so content can float over a photo, gradient, or scrolling list with a glassmorphism look. It is not a filter on its own children — the children render crisply on top of the blurred backdrop.

On MAUI the control is FrostedGlassView, a ContentView that drops a native blur surface behind its content. On Blazor it is FrostedGlass, a container that applies CSS backdrop-filter.

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Frameworks

.NET MAUI

Blazor

Features

• Real backdrop blur, not a tint — samples the pixels behind the view every frame, so it stays correct while the content underneath scrolls or animates
• Native per-platform implementation — UIVisualEffectView on Apple, RenderEffect on Android 12+, backdrop-filter on the web
• Automatic light/dark material on Apple — picks the ultra-thin light or dark system material to match the current theme
• Tint layer on top of the blur — TintColor + TintOpacity let you push the glass warmer, cooler, lighter, or darker
• Corner clipping — CornerRadius rounds the blur surface itself, not just the content

Quick Start

<!-- MAUI -->
<Grid>
    <Image Source="hero.jpg" Aspect="AspectFill" />

    <shiny:FrostedGlassView BlurRadius="20"
                            TintColor="#80FFFFFF"
                            TintOpacity="0.6"
                            CornerRadius="16"
                            Margin="20"
                            VerticalOptions="End">
        <VerticalStackLayout Padding="20" Spacing="8">
            <Label Text="Glass Card" FontSize="20" FontAttributes="Bold" />
            <Label Text="Content over a blurred background." FontSize="14" />
        </VerticalStackLayout>
    </shiny:FrostedGlassView>
</Grid>

@* Blazor *@
<div style="background-image: url('hero.jpg'); background-size: cover;">
    <FrostedGlass BlurRadius="20" TintColor="rgba(255,255,255,0.6)" CornerRadius="16">
        <h3>Glass Card</h3>
        <p>Content over a blurred background.</p>
    </FrostedGlass>
</div>

Blur needs something to blur

The effect samples what is behind the view. Over a flat solid color there is nothing to blur, so the control will look like a plain tinted rectangle. Always place it over an image, gradient, or scrolling content.

Properties

MAUI — FrostedGlassView

Property	Type	Default	Description
GlassContent	View?	null	Content rendered on top of the glass. This is the ContentProperty, so child XAML binds to it implicitly
BlurRadius	double	20	Blur strength in pixels
TintColor	Color	#80FFFFFF	Tint overlay drawn above the blur
TintOpacity	double	0.6	Opacity of the tint overlay
CornerRadius	double	0	Corner radius applied to the glass surface

Blazor — FrostedGlass

Parameter	Type	Default	Description
ChildContent	RenderFragment?	null	Content rendered on top of the glass
BlurRadius	double	20	Blur strength in pixels
TintColor	string	rgba(255, 255, 255, 0.6)	CSS color for the tint overlay
CornerRadius	double	0	Border radius in pixels
CssClass	string?	null	Extra CSS classes on the root element
Style	string?	null	Extra inline CSS on the root element

Platform Behavior

Platform	Implementation
iOS / Mac Catalyst	UIVisualEffectView with the system ultra-thin material — light or dark is chosen from the current theme. Because the material carries its own tint, the control reduces its own tint overlay to avoid double-tinting
Android 12+ (API 31, S)	The background behind the view is captured on each pre-draw pass and blurred with RenderEffect
Android 11 and older	RenderEffect is unavailable, so no blur is applied — the view falls back to the semi-transparent tint only
Blazor	CSS backdrop-filter: blur() with the -webkit- prefix

Android fallback

On Android 11 and below you get the tint without the blur. If the glass is load-bearing in your design, pick a TintColor / TintOpacity pair that still reads well on its own.

Tips

• Over dark backgrounds use a light tint (#80FFFFFF); over light backgrounds use a dark tint (#80000000)
• Pair with CornerRadius for rounded glass cards, or leave it at 0 for edge-to-edge bars
• For a translucent nav bar or toolbar, overlay a FrostedGlassView on top of the page content rather than placing it in the layout flow
• Larger BlurRadius values cost more on Android, since each pre-draw pass re-blurs the captured backdrop — keep it modest on long scrolling lists

Related

• Overlay & LoadingOverlay — has a BlurRadius that uses this same effect behind its backdrop
• FloatingPanel — commonly paired with glass for sheet chrome

Claude Code GitHub Copilot

Step 1 — Add the marketplace:

claude plugin marketplace add shinyorg/skills

Step 2 — Install plugins:

claude plugin install shiny-client@shiny

BLE, GPS, Jobs, Notifications, Push, HTTP Transfers, OBD, Music, Health, DataSync — iOS, Android, Windows, MacOS, Linux, Web

claude plugin install shiny-maui@shiny

Shell, Contact Store

claude plugin install controls@shiny

TableView, BottomSheet, PillView, ImageViewer, Scheduler, Markdown, Mermaid Diagrams — MAUI and Blazor

claude plugin install shiny-mediator@shiny

Mediator/CQRS with middleware and source generators

claude plugin install shiny-data@shiny

DocumentDB and Spatial data libraries

claude plugin install shiny-aspire@shiny

Orleans and Gluetun Aspire integrations

claude plugin install shiny-extensions@shiny

DI, Stores, Reflector, Localization, Hosting modules

Step 1 — Add the marketplace:

copilot plugin marketplace add https://github.com/shinyorg/skills

Step 2 — Install plugins:

copilot plugin install shiny-client@shiny

BLE, GPS, Jobs, Notifications, Push, HTTP Transfers, OBD, Music, Health, DataSync — iOS, Android, Windows, MacOS, Linux, Web

copilot plugin install shiny-maui@shiny

Shell, Contact Store

copilot plugin install controls@shiny

TableView, BottomSheet, PillView, ImageViewer, Scheduler, Markdown, Mermaid Diagrams — MAUI and Blazor

copilot plugin install shiny-mediator@shiny

Mediator/CQRS with middleware and source generators

copilot plugin install shiny-data@shiny

DocumentDB and Spatial data libraries

copilot plugin install shiny-aspire@shiny

Orleans and Gluetun Aspire integrations

copilot plugin install shiny-extensions@shiny

DI, Stores, Reflector, Localization, Hosting modules

View Skills Repository