How do I convert an image to Base64?

Upload the image to the Image to Base64 tool. It returns the encoded string and ready-to-use CSS and HTML snippets. You can also use JavaScript: reader.readAsDataURL(file).

Does Base64 increase image size?

Yes, by approximately 33%. A 3KB image becomes ~4KB in Base64. This is acceptable for small icons but problematic for large images.

Can I Base64 encode SVG files?

Yes, but raw SVG markup is often better — you can include SVG directly in HTML or CSS without Base64 encoding, and it's more readable and editable.

How to Convert an Image to Base64 for CSS and HTML

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