Image & Design
Image ⇄ Base64
Image to Base64 converts an image file into a Base64-encoded data URI you can paste directly into CSS, HTML, or JSON, and it also works in reverse — paste in a data URI and preview it as an actual image. It's a handy utility for developers embedding small icons or images directly into code without a separate file request.
The encoding and decoding both happen using your browser's built-in JavaScript, so your image file is processed locally and never uploaded to any server.
How to Use the Image ⇄ Base64
- Open the Image to Base64 tool.
- Upload an image to convert it to a Base64 data URI, or paste an existing data URI to preview it as an image.
- Copy the generated Base64 string or view the decoded image.
- Paste the string into your CSS, HTML, or code where needed.
Frequently Asked Questions
Why would I embed an image as Base64 instead of linking a file?
Base64 embedding avoids a separate HTTP request for small images, which can be useful for tiny icons or inline styles, though it increases the size of the surrounding code.
Can this tool decode a data URI back into an image?
Yes, paste a Base64 data URI into the tool and it will render a preview of the actual image.
Is there a size limit on images I can convert?
Very large images will produce very long Base64 strings, so the tool works best with small to medium-sized images like icons and thumbnails.