Image to Base64

Base64 encoding converts binary image data into a plain ASCII string that can be embedded directly into HTML, CSS, JavaScript, JSON, or XML. This technique is widely used by web developers to inline small icons and logos into CSS files (data URIs), embed images in JSON API responses, include images in email HTML templates without external attachments, and store image data in databases or localStorage. Instead of making an additional HTTP request to load an image, a Base64-encoded data URI loads the image inline — useful for critical above-the-fold images where every millisecond counts.

This tool converts any image file (PNG, JPG, GIF, WebP, SVG) to its Base64 representation entirely in your browser. The conversion uses the FileReader API — your image is never uploaded anywhere. The output string can be copied and pasted directly into your code as a data URI (data:image/png;base64,...). For large images, Base64 encoding increases file size by approximately 33%, so this technique is best suited for small assets under 10KB. The tool displays the full Base64 string with a one-click copy button for convenience.