Free Image to Base64 Converter Online

Convert JPG, PNG, GIF, WebP, SVG images to Base64 data URI. Generate CSS background-image, HTML img tag, or plain Base64 string. 100% client-side - your images never leave your browser.

📁 Click to upload or drag & drop image
Supports: JPG, PNG, GIF, WebP, SVG (Max 10MB)
Output Format
Base64 Output
Image Preview & Details
Preview
File:
Size:
Type:
Dimensions:
Base64 Length:

About Data URI & Base64 Images

Data URI scheme allows you to embed images directly in HTML/CSS using Base64 encoding.

Format: data:[mediatype][;base64],[data]

Example:

<img src="data:image/png;base64,iVBORw0KGgoAAAA..." alt="Image" />

Advantages:

  • Reduces HTTP requests
  • Images load instantly with HTML/CSS
  • Good for small icons and logos
  • Works in offline applications

Disadvantages:

  • Increases HTML/CSS file size by ~33%
  • Not cached separately
  • Not suitable for large images
  • Cannot be lazy-loaded

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