Image to Base64 Converter

Convert any image to a Base64 Data URI for embedding directly in HTML or CSS.

Image → Base64 Data URI

Drag & Drop Image or Click to Browse

Supports PNG, JPG, WebP, SVG, GIF (Max 10MB)
Base64 Data URI Output

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What is the Image to Base64 Converter?

Converting images to Base64 Data URIs embeds image data directly in your HTML or CSS as a text string. The browser decodes and renders the image without making a separate HTTP request. This technique is most effective for small images (icons, logos, UI elements under 10KB) where eliminating the request overhead outweighs the 33% size increase from Base64 encoding. The FileReader API reads image bytes locally and produces a complete data:image/type;base64,... string ready for use in img src attributes or CSS background-image properties.

How to use the Image to Base64 Converter?

  1. Drag and drop an image (PNG, JPG, WebP, SVG, or GIF) onto the drop zone, or click to browse files.
  2. The tool reads the image locally and generates the complete Base64 Data URI string instantly.
  3. The output includes the full data:image/type;base64,... prefix ready to paste into HTML img src or CSS background-image.
  4. File metadata (name, size, MIME type) is displayed for reference.
  5. Click 'Copy' to copy the full Data URI to your clipboard for embedding in your code.

Frequently Asked Questions

What is a Base64 Data URI for images?

A Data URI embeds the image directly in HTML or CSS as a Base64-encoded string (format: data:image/png;base64,...). The browser renders the image without making a separate HTTP request, which can improve page load for small images.

When should I use Base64 images?

Use Base64 for small images (icons, logos under 10KB) to reduce HTTP requests. For larger images, regular file references are better because Base64 increases size by 33% and can't be cached independently.

What image formats are supported?

This tool supports PNG, JPEG, WebP, SVG, GIF, and BMP. The MIME type is automatically detected and included in the Data URI prefix.

Is my image uploaded anywhere?

No. The image is read locally using the FileReader API. It never leaves your device — all processing happens in your browser.