▚ sandboxmax

Image to Data URL Converter

Drop an image (or any small file) and it becomes a data: URL — the file's bytes encoded to Base64 with a MIME prefix, ready to paste into an <img> tag or a CSS background. The live preview renders the result so you can verify it visually before copying. The file is read with FileReader inside your browser; nothing is uploaded.

runs 100% in your browser — text & files never uploaded

  1. 1Pick mode & directionText Mode for strings, File Mode for images and small files; encode or decode.
  2. 2Paste or dropConversion runs on every keystroke — UTF-8, URL-safe Base64, and data: URLs all handled.
  3. 3Copy or previewGrab the result with one click; decoded images render live in the preview sandbox.

Encoded and decoded with your browser’s native btoa/atoband FileReader — text and files never leave this tab.

How to embed the result

<!-- HTML: paste the data URL straight into src -->
<img src="data:image/png;base64,iVBORw0K..." alt="logo" />

/* CSS: or embed it as a background image */
.logo {
  background-image: url("data:image/png;base64,iVBORw0K...");
}

Rule of thumb: data URLs shine for small assets (icons, logos under ~10 KB) where saving an HTTP request beats the ~33% Base64 size overhead — for bigger images, a normal file is usually the better call.

More Base64 tools

/base64/encode-text-to-base64

Text to Base64 Encoder

/base64/decode-base64-to-string

Base64 to String Decoder

Is it safe to paste sensitive data into the Image to Data URL Converter?

Yes. The Image to Data URL Converter runs 100% client-side inside your browser thread — nothing you paste is uploaded, logged, or transmitted. SandboxMax is a static site with no backend server, no cookies, and no trackers: open your browser's network panel while you work and you'll see zero requests leave the tab.