Image to Base64

What Is Image to Base64?

Image to Base64 converts your image files into Base64-encoded strings, letting you embed image data directly into HTML, CSS, or JavaScript without extra HTTP requests. The result is a Data URI — a string that looks like data:image/png;base64,iVBOR....

How It Works

Uploaded images are read and re-rendered right in your browser using the Canvas API. Use the Quality slider (for JPEG/WEBP) to control compression, the Scale slider to resize the output, or pick a different format. Everything stays in your browser — no image data is ever sent to a server.

4 Output Formats

• Pure Base64 — the raw Base64 string without the Data URI prefix
• Data URI — the full data:image/...;base64,... format
• HTML <img> Tag — ready-to-use <img src="..."> markup
• CSS background — ready-to-use background-image: url(...) declaration

Use Cases

• Embed small icons or logos in HTML emails so external images aren't blocked
• Inline small images like icons or button backgrounds directly in CSS to cut down HTTP requests
• Use images in code sandboxes like CodePen or JSFiddle without hosting them separately
• Send small image data through JSON APIs
• Embed screenshots in Markdown using Base64 — handy when external images aren't supported

Examples

HTML <img> Tag

<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUg..." alt="embedded image">

CSS background-image

.element {
  background-image: url('data:image/png;base64,iVBORw0KGgoAA...');
  background-size: cover;
}