Blazor.Canvas
A pure C# wrapper for the HTML Canvas API in Blazor applications with no JavaScript dependency.
What is Blazor.Canvas?
Excubo.Blazor.Canvas is a C# wrapper library for the HTML Canvas API that allows Blazor developers to create and manipulate canvas graphics entirely in C# without writing JavaScript. It provides a type-safe, performant interface to draw shapes, text, images, and apply transformations directly from Blazor components.
Blazor developers building interactive graphics, data visualizations, games, or custom drawing interfaces who want to avoid mixing JavaScript with their C# codebase.
It eliminates the need for JavaScript in canvas operations, offers full IntelliSense support, batches calls for performance, and maintains API compatibility with the standard HTML canvas while being purely C#.
Overview
Excubo.Blazor.Canvas is a wrapper library that provides full access to the HTML Canvas API from C# in Blazor applications. It enables developers to create rich graphics and visualizations directly in their Blazor components without writing any JavaScript.
Key Features
- Pure C# Implementation — No JavaScript code required, leveraging Blazor's JavaScript interop internally.
- Type-Safe API — Full IntelliSense support with method signatures matching the canvas specification.
- Performance Optimization — Batches multiple canvas operations into single JavaScript interop calls to minimize overhead.
- Dual Naming Conventions — Supports both C#-style async method names and original JavaScript naming via a
.JSproperty. - API Grouping — Methods are logically grouped (e.g., Drawing, Transformations, Shadows) for better discoverability and intent clarity.
Philosophy
The library prioritizes type safety, performance through batching, and a zero-JavaScript payload requirement, allowing Blazor developers to work entirely in C# while utilizing the full canvas API.
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