Image to Base64

No. The file is read locally with the browser's FileReader and converted in memory. Nothing is sent anywhere, so private assets and unreleased designs stay on your machine.

It is a way of embedding file content directly in a URL. Instead of pointing at an image file, the URL carries the image itself as Base64 text, so no extra network request is needed.

For small assets that appear on every page, such as icons, small logos or a background pattern. Inlining removes a request, which is worth it while the file stays small.

For anything large, and for images that change often. Base64 grows the file by about a third, cannot be cached separately from the stylesheet, and bloats the CSS every visitor downloads.

Base64 encodes three bytes into four characters, so the result is roughly 33 percent larger before any compression. Gzip recovers some but not all of that.

You can, though for SVG a URL-encoded version is usually smaller and stays readable. Base64 is the safer choice when the markup contains characters that need escaping.

Yes. The file bytes are encoded as they are, so PNG transparency and animated GIF frames survive untouched.

Yes, completely free with no sign-up and no watermark.