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Image to Base64

Turn an image into a data URI you can paste straight into CSS or HTML.

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Drop an image here or click to browse

Everything happens in your browser. The file is never uploaded.

Data URI

Data URI size

0 B

Original file

0 B

Overhead

MIME type

Preview

64px

natural

Snippets

A data URI adds roughly a third to the file size on top of the base64 payload, because base64 encodes three bytes as four characters. That is fine for icons and sprites, but a data URI over about 10 KB is usually better served as a real file, because it cannot be cached separately and is re-sent with every request that uses the stylesheet.

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What Is Image to Base64?

The Image to Base64 tool encodes an uploaded image as a data URI you can paste straight into CSS, HTML, or JSON. It shows the exact character count, the growth versus the original file, and ready snippets for each use.

Who Uses the Image to Base64?

Frontend developers use it for a small logo or icon that should ship inside a stylesheet or a component, email templates that block external images, and anywhere a data URI is allowed but a URL is not. It is also the quickest way to check how large an inline image really is.

How to Use the Image to Base64

Drop in an image or choose one from your device.
Copy the CSS, HTML, or JSON snippet you need.
Check the size shown against your budget before you ship it.

Why Choose Our Image to Base64?

Works entirely in your browser, no upload
CSS, HTML, and JSON snippets
Data URI size growth made explicit

Try the Image to Base64 above — it is free, fast, and works on any device. Bookmark this page to return whenever you need it.