SVG to Data URI

How SVG to Data URI works

Convert SVG markup into a URL-encoded data URI for CSS backgrounds. The output is quoted and escaped so it drops straight into a background-image rule. Everything happens inside this page: the tool reads your input, runs the calculation or conversion locally, and hands the result back to you. Nothing is transmitted, because there is no backend to transmit it to.

That design choice is deliberate. Most free tool sites upload your files to a server, process them there, and quietly keep a copy. Toolcin cannot do that — the site is a set of static files. If your connection dropped the moment the page finished loading, every tool would still work.

An inline image without a request

The SVG markup is URL-encoded and turned into a data:image/svg+xml,… URI that can go straight into a CSS background-image or an img src. The page then needs no extra HTTP request for that icon.

That is genuinely useful for small icons and for email templates, where external images are often blocked and inline data survives.

Why the output looks unreadable

Encoding replaces spaces, quotes and angle brackets with %XX sequences so the URI stays valid inside CSS. Some tools emit Base64 instead; it is also valid but about a third larger and impossible to read or tweak afterwards.

Keep the readable form when you might edit the icon — changing one fill colour in a percent-encoded string is far easier than in Base64.

When not to inline

Above about 5 KB the encoded string bloats the CSS and cannot be cached separately, so a second page re-downloads it. Use a file for anything larger than a simple icon.

Good to know

• Works offline once loaded, including on flights and in locked-down networks.
• No file size limit beyond your device's own memory.
• Free to use, with no account and no usage counter.
• Results are produced locally, so they are not logged or shared with anyone.

Questions