Free online CSS Houdini Paint Worklet generator. Generate custom CSS drawing code with 5 pattern types and live Canvas preview. Pure frontend.
The CSS Houdini Paint Generator is a free online tool that helps frontend developers quickly generate CSS Paint Worklet code. Extend CSS background and border drawing capabilities with custom JavaScript logic. 5 base patterns with live Canvas preview. Pure frontend.
Replace repeating background-image with Paint Worklet for infinite tiling custom pattern backgrounds.
Combine with CSS custom properties for responsive dynamic border drawing effects.
Paint Worklet runs in a separate thread without blocking the main thread, ideal for frequently redrawn elements.
CSS Houdini is a set of W3C low-level APIs that let developers extend the CSS engine. Paint Worklet is one of the most mature Houdini APIs. Unlike Canvas, Paint Worklet is declarative — the browser automatically calls paint() when needed. Worklet runs in an isolated render thread, never blocking the main thread, making it naturally suited for performance-sensitive drawing scenarios.
Paint Worklet is part of CSS Houdini that allows developers to write custom drawing logic in JavaScript, then use it via CSS paint() function for backgrounds, borders, etc. It extends CSS drawing capabilities with JS.
Chrome 65+ and Edge 79+ support Paint Worklet. Safari is implementing it. Firefox doesn't support it yet. Use @supports detection or provide CSS fallbacks.
Call CSS.paintWorklet.addModule('paint-file.js') in your main JS to load the Worklet. In the Worklet file, use registerPaint() to register the painter class. In CSS, use background: paint(paint-name).
Canvas is imperative — you manually manage drawing. Paint Worklet is declarative — driven by CSS properties, the browser automatically calls paint(). Worklet runs in a separate thread without blocking the main thread.
This tool supports 5 base patterns: checkerboard, dots, diagonal stripes, crosshatch, and waves. Each pattern allows custom colors and sizes. Generated code can be further modified.
No. Paint Worklet runs in an isolated Worklet global scope and cannot access DOM, window, or other APIs. It can only use Canvas 2D API for drawing, ensuring performance and security.