How to Use the SVG to CSS Data URI & Base64 Converter
-
1
Paste your SVG markup or drop an SVG file.
-
2
Select format: URL-encoded (recommended for CSS) or Base64.
-
3
Copy CSS background-image property, HTML img tag, or clean URI.
Practical Example & Use Case
Common Real-World Scenario
Inlining a search icon SVG directly into CSS background without extra HTTP requests.
Technical Notes & Limitations
Browser Engine Architecture
URL encoding is much smaller than Base64 for SVGs (only special chars like #, <, > are encoded).
Frequently Asked Questions
Why is URL-encoded SVG better than Base64?
Base64 adds ~33% overhead. UTF-8 URL-encoded SVGs compress better with Gzip/Brotli and remain human-readable.
Does data URI work in all browsers?
Yes, data:image/svg+xml is universally supported in all modern web browsers.