Select URL encoding (recommended) or Base64 encoding.
03
Convert
Click 'Convert to CSS' to generate the data URI.
04
Copy the CSS
Copy the complete background-image CSS declaration.
05
Apply in your stylesheet
Paste into your CSS to use the SVG as a background image without an external file.
What is an SVG to CSS background converter?
The SVG to CSS converter transforms SVG code into a URL-encoded or Base64-encoded data URI that can be used directly as a CSS background-image. This allows SVG graphics to be embedded inline in CSS without requiring a separate SVG file reference.
Embedding SVGs as CSS data URIs reduces HTTP requests by eliminating a separate file request, and makes the SVG directly controllable through CSS without needing to modify HTML. It's particularly useful for SVG icons, patterns, and decorative elements applied as backgrounds.
Why use an SVG to CSS background converter?
Every external file request adds latency. For small SVG icons used as CSS backgrounds (checkmarks, arrows, decorative patterns), embedding as a data URI eliminates the HTTP request entirely, improving performance for frequently used small SVGs.
SVG to CSS background converter: frequently asked questions
Why use SVG as a CSS data URI instead of a file reference?
Data URIs eliminate an HTTP request, which reduces latency for small frequently used graphics. They're also useful when SVG access from CSS is restricted by Content Security Policy settings.
Should I use URL encoding or Base64 for SVG?
URL encoding is preferred for SVGs — it produces smaller file sizes than Base64 for text-based SVG content and is directly readable and debuggable in browser DevTools.
Can I use JavaScript in SVGs embedded as CSS backgrounds?
No. SVGs embedded as CSS backgrounds cannot run JavaScript or load external resources. They're treated as static images. For interactive SVGs, embed them inline in HTML.
Is there a size limit for SVG data URIs?
Browsers support data URIs up to several MB, but for performance, SVG data URIs should be kept small. Large SVGs are better served as external files cached by the browser and CDN.
Can I modify the SVG color through CSS?
SVGs embedded as background-image data URIs cannot have their colours changed via CSS. To change colour dynamically, embed the SVG inline in HTML, where CSS and JavaScript can target its elements.
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