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Image Base64 Converter

Free online tool to convert images to Base64 strings, or convert Base64 strings back to images for preview and download.

Features​

  • Bidirectional Conversion: Convert Image to Base64 and Base64 to Image
  • Real-time Preview: Instantly preview the image after conversion
  • Local Processing: All processing happens in your browser for privacy
  • Format Support: Supports PNG, JPG, GIF, WebP, SVG, and more
  • One-click Copy: Copy full Data URI or just the Base64 code
  • MCP Support: Provides MCP interface for AI assistants

What is Image Base64?​

Base64 is a method of encoding binary data into ASCII characters. In web development, it's often used to embed small images directly into HTML or CSS to reduce HTTP requests and improve page loading speed.

Format: data:image/[format];base64,[encoded_data]

Common Use Cases​

  1. CSS Backgrounds: Embed small icons directly in CSS.
  2. HTML Images: Use directly in the src attribute of <img> tags.
  3. Data Transfer: Transmit image data in JSON APIs.
  4. Markdown: Embed images in Markdown docs without external links.