CSS Data URI Converter

Upload an image and instantly generate CSS with an embedded Base64 data URI. Perfect for inline backgrounds, icons, and reducing HTTP requests.

Last Updated: September 2026
100% Client-Side — Your data never leaves your device

Drop an image here, or click to browse

Supports PNG, JPG, GIF, SVG, WebP

Upload an image to generate CSS with an embedded Base64 data URI

Why this tool is safe

Your data never leaves your device — everything runs in your browser.

No server uploads. Other tools send your files to their servers. Ours don't.
Zero tracking of content. We never see, store, or log anything you convert.
Works offline. Once loaded, the tool works without an internet connection.
No account required. Instantly use all tools completely free without signing up.

Frequently Asked Questions

Search below or browse through our most commonly asked questions.

It's a way to embed a Base64-encoded image directly into a CSS file using the background-image property, saving an HTTP request.
For small icons, it improves load time by reducing requests. For large images, it drastically bloats your CSS file, causing render-blocking delays.

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