Are my files uploaded to a server?

No. This tool runs entirely in your browser — your files and text never leave your device, which makes it fast and completely private.

When should I use Base64 images?

Base64 is ideal for tiny images (icons, logos) you want to inline in HTML/CSS to save an HTTP request. For large images, a normal file is better.

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Encode an image as a Base64 data URI.

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Convert an image to a Base64 data URI you can embed directly in HTML or CSS. Copy the data URI, an <img> tag or a CSS snippet with one click.

Part of our Image Tools collection. Browse all tools.

Are my files uploaded to a server?: No. This tool runs entirely in your browser — your files and text never leave your device, which makes it fast and completely private.
When should I use Base64 images?: Base64 is ideal for tiny images (icons, logos) you want to inline in HTML/CSS to save an HTTP request. For large images, a normal file is better.