SVG to Data URI conversion transforms your SVG (Scalable Vector Graphics) code into a Data URI — a special string that embeds the image data directly into your HTML, CSS, or JavaScript. Instead of linking to an external .svg file, the image data is included inline using the data:image/svg+xml scheme. This eliminates extra HTTP requests and is perfect for icons, logos, and small illustrations.

Base64 is generally recommended for production use. It's more compact for complex SVGs, handles special characters (like #, <, >) safely, and is universally supported in all browsers. URL-encoded (UTF-8) format is more human-readable since parts of the SVG remain visible, but it can be larger and may require extra escaping in CSS. For CSS background-image usage, Base64 is the safer choice because it avoids issues with unescaped characters like # which can break CSS syntax.

You can use the generated Data URI directly in your CSS as a background-image or mask-image. Example:
background-image: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0i...");
When using URL-encoded format in CSS, make sure to properly escape any # characters as %23. Base64 format avoids this issue entirely, making it the preferred choice for CSS backgrounds.

While there's no strict technical limit, Data URIs are best suited for small images (typically under 10–20 KB). Large Data URIs can bloat your HTML/CSS files and increase page load time. For larger SVG files, it's often better to serve them as external files with proper caching headers. As a rule of thumb: if your SVG is under 5 KB, embedding as a Data URI is efficient; above 20 KB, consider using an external file.

When enabled, the optimizer safely removes XML comments, unnecessary whitespace, blank lines, and the optional XML declaration (<?xml version="1.0"?>) from your SVG before encoding. This reduces the Data URI size without affecting how the SVG renders. For most use cases, the reduction is 5–25%. The optimization preserves content inside <text> and <style> elements to avoid breaking your SVG.

Yes! SVG Data URIs are supported in all modern browsers, including Chrome, Firefox, Safari, Edge, and Opera — both on desktop and mobile. IE9+ also supports them. For the broadest compatibility, use the Base64-encoded format with the data:image/svg+xml;base64,... scheme. Always include the xmlns="http://www.w3.org/2000/svg" attribute in your SVG for proper rendering across all browsers.

Absolutely! You can use the generated Data URI directly as the src attribute of an <img> tag:
<img src="data:image/svg+xml;base64,PHN2ZyB4bWxucz0i..." alt="My Icon">
This works just like a regular image URL and supports all standard img attributes (width, height, alt, class, etc.). The preview area in this tool demonstrates exactly this behavior.

If the preview is blank, check that: (1) your SVG code is valid XML with proper closing tags, (2) it includes the xmlns="http://www.w3.org/2000/svg" namespace declaration, (3) there are no syntax errors like unescaped ampersands. Also, note that SVGs with external references (like linked fonts or images) may not render fully in Data URI form. Use self-contained SVGs for best results.