Image to Base64 Converter
Convert image data into base64 strings and formatted data URIs for HTML, CSS, or API integration.
Run tool
This tool converts image data into standard base64 text and optional MIME-tagged data URIs. Developers frequently use base64 strings to embed icons, badges, and small graphics directly inside HTML files, CSS stylesheets, or JSON payloads without triggering separate network requests for external assets. You supply the image data, and the converter processes the original file bytes into clean base64 text. When the data URI option remains checked, the tool prefixes the string with the appropriate media declaration, such as image/png, image/jpeg, image/webp, image/gif, or image/bmp. If an image format cannot be identified, the converter falls back to the standard image/png media type. You can copy either the raw base64 string or the complete formatted data URI for direct insertion into web templates, email layouts, or configuration files. If you leave the input field empty or submit an unreadable file, the tool flags the issue so you can provide valid image data.
Instructions
- Select or supply your image data in the input field.
- Keep the Include Data URI option enabled if you need a complete prefix for HTML or CSS, or uncheck it for raw base64 text.
- Click Run to process the image bytes.
- Copy the resulting base64 string or data URI from the output panel.
Examples
- Input: A PNG icon with Include Data URI checked -> Output: data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAA...
- Input: A JPEG photo with Include Data URI unchecked -> Output: /9j/4AAQSkZJRgABAQEASABIAAD/...
FAQ
Which image formats are supported?
The tool recognizes PNG, JPEG, WEBP, GIF, and BMP formats and assigns their standard MIME types. If the format cannot be identified, it falls back to image/png.
What is the difference between raw base64 and a data URI?
A raw base64 string contains only the encoded image characters. A data URI adds a schema prefix such as data:image/png;base64, which allows direct use inside HTML src attributes and CSS url() definitions.
What happens if I submit an empty input?
The converter requires image data to process. If the input field is left empty, the tool will alert you to provide valid data.
Can I use the output in CSS background properties?
Yes, when Include Data URI is selected, you can paste the full data URI directly inside the url() value of a CSS background-image property.