About this tool
Embedding a small image directly into your CSS or HTML avoids a separate network request, which can be useful for icons, small logos, or inline SVG-style graphics. This tool converts any image you drop onto it into a Base64-encoded data URL — a single line of text in the form data:image/png;base64,... — that you can paste directly into a background-image CSS property, an src attribute, or a JSON field expecting embedded image data. Because Base64 output is roughly 33% larger than the original binary file, this technique works best for small images rather than full-size photos, where the added weight would outweigh the benefit of skipping a request. Conversion happens entirely in your browser.
Frequently asked questions
Why would I use a data URL instead of a normal image file?
It avoids an extra HTTP request, which helps for small icons or graphics where request overhead matters more than the ~33% size increase from Base64 encoding.
Does this work for large photos too?
Technically yes, but it's not recommended — large images become very large Base64 strings, which bloats your HTML/CSS and often hurts performance more than it helps.
What formats can I convert?
PNG, JPG, and WebP images can all be converted into their corresponding data URL format.
Can I paste the output directly into CSS?
Yes — the output is a complete, ready-to-use data URL you can drop straight into a background-image or content property.
Is the image uploaded to a server during conversion?
No, the encoding happens entirely in your browser using JavaScript's file reading APIs.