Base64 Image Previewer

Paste a Base64 string or data URL and instantly preview the image. Shows format, dimensions, and estimated file size.

How to use

  1. Paste a Base64 string or data URL into the text box.
  2. The image preview, format, dimensions, and estimated file size appear instantly.
  3. Click "Copy data URL" to copy the full data URL to your clipboard.

Frequently asked questions

How do I preview a Base64 image?

Paste the Base64 string or full data URL (e.g. data:image/png;base64,...) into the input box. The image renders instantly below with format, dimensions, and estimated file size.

What Base64 image formats are supported?

Any format your browser supports: PNG, JPEG, GIF, WebP, SVG, BMP, ICO, and AVIF. The tool auto-detects the format from the data URL prefix or attempts to render raw Base64 as PNG.

Is my Base64 data sent to a server?

No. Everything runs locally in your browser. Your data never leaves your device.

What is a Base64 data URL?

A data URL embeds file content directly in a string using the format data:[mediatype];base64,[data]. For images, it looks like data:image/png;base64,iVBORw0KGgo... and can be used directly in HTML img src attributes or CSS background-image.

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