UWTools
Developer Tools

Base64 Image Encoder

Turn an image into a Base64 data URL without uploading it.

Image preview
—Dimensions
—MIME type
—Encoded chars

Choose an image. Base64 output is typically larger than the source file.

What is a data URL?

A data URL embeds file data directly into text using Base64 encoding. It is useful for small assets but can significantly increase text size.

Privacy

The image is read locally with the FileReader API.