Embed small images directly in HTML, CSS, JSON or email templates. Drop an image to get the Base64 string, the full data URI and ready-made snippets.
Free, no sign-up
Files never leave your device
No watermark
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Your files are processed on this device and are never uploaded to a server.
How to use the Image to Base64
1
Drop an image.
2
Copy the data URI, plain Base64, HTML or CSS snippet.
When to inline images
Base64 adds about 33 percent to the size and cannot be cached separately, so inline only small icons and images under a few kilobytes. Larger images load faster as normal files.
Frequently asked questions
Are my images uploaded to a server?
No. Images are decoded and processed by your browser on your own device. Nothing is uploaded, which also makes the tool fast for large batches.