SVG Pattern Maker

Add texture to your UI. Visually design seamless, repeating background patterns using lightweight SVGs encoded directly into your CSS.

/* Generated on cssgen.org */

The Power of SVG Data URIs

Adding subtle texture to a background—like a graph-paper grid or isometric dots—is a classic way to make a UI feel more tactile and premium. In the past, this required slicing a repeating tile in Photoshop and serving it as a PNG file.

Today, Scalable Vector Graphics (SVG) have revolutionized this process. Because SVGs are fundamentally just math and XML code, we can encode them directly into the CSS background-image property using a Data URI. This eliminates the need for an external network request, making your site significantly faster. Read more about Data URIs on MDN.

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Pro Tips for Pattern Design

  • Keep It Subtle: A background pattern should never compete with your content. Set your Pattern Opacity very low (between 0.05 and 0.15) so it feels like a subtle texture rather than a loud graphic.
  • Combining with Gradients: Our generated CSS separates the background-color from the SVG background-image. This means you can easily replace the flat background color with a Linear Gradient while keeping the seamless SVG texture floating on top!
  • URL Encoding: When copying the CSS, you will notice characters like %23 instead of #. This is required! Browsers will fail to render SVG Data URIs if certain special characters are not properly URL-encoded. Our tool handles this complex string formatting automatically.

Frequently Asked Questions

How do you use an SVG as a CSS background?

You can use an SVG directly in CSS without hosting an external file by encoding it into a Data URI. You apply it using the background-image property, ensuring special characters like brackets and hex hashes are URL-encoded. Example: background-image: url('data:image/svg+xml,...');

Are SVG backgrounds better than PNG patterns?

Yes, absolutely. SVG patterns scale infinitely without losing quality, guaranteeing they look crisp on Retina and 4K displays. Because the SVG is written directly into the CSS file, it eliminates an HTTP request, drastically improving your Core Web Vitals and load speed.

Why isn't my custom SVG rendering in CSS?

The most common reason an inline SVG fails to render in CSS is improper encoding. A hex color code like #ff0000 must be encoded to %23ff0000, and double quotes should be swapped to single quotes. Our generator handles all of this automatically.