Image to Base64

About Image to Base64

Image to Base64 is a free online tool. Encode a small image as a Base64 data URI that you can paste straight into HTML, CSS or JSON. It runs entirely in your browser, so there is nothing to install, no account to create and no watermark added to your result.

How to use Image to Base64

1. Choose an image file or paste the Base64 string, depending on the direction.
2. Press the button to encode or decode.
3. Copy the result or download the image.

Worked example

Enter a short sample first to see how Image to Base64 behaves, check the result, then run your real content.

Tips for best results

• Use data URIs only for tiny icons; Base64 makes data about 33 percent bigger and cannot be cached separately.
• Everything runs in your browser, so you can use Image to Base64 even on a slow connection once the page has loaded.

Limits to keep in mind

• Files are processed in your browser, so very large files depend on your device memory and may be slow. The limit is 50 MB per file.

Frequently asked questions