Image to Base64
Upload an image to get its Base64-encoded data URI string.
How to Use
- 1Upload an image or drag and drop it onto the tool.
- 2View the Base64-encoded string and the data URI.
- 3Copy the data URI for use in HTML img tags, CSS background-image, or JavaScript.
- 4Check the encoded size to decide if embedding is worthwhile.
Frequently Asked Questions
When should I use Base64-encoded images?
Base64 encoding is best for small images like icons, logos, and decorative elements under 10 KB. It eliminates an extra HTTP request but increases the overall HTML/CSS file size by about 33%, so it is not ideal for large images.
How do I use a Base64 image in HTML?
Set the src attribute of an img tag to the data URI: <img src="data:image/png;base64,iVBOR...">. The tool generates the complete data URI ready to paste.
Does Base64 encoding increase file size?
Yes. Base64 encoding increases the data size by approximately 33% compared to the original binary. This trade-off is acceptable for small images where eliminating an HTTP request provides a net performance gain.