Image to Base64 Converter
Convert images to Base64 strings and decode Base64 to images
Drop image here or click to select
Supports: PNG, JPG, GIF, WebP, SVG, BMP (Max 5MB)
Supports raw Base64, Data URI (data:image/...), HTML <img> tag, or CSS background-image
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About Image Base64 Conversion
What is Image Base64 Encoding?
Base64 encoding converts binary image data into ASCII text strings. This allows images to be embedded directly in HTML, CSS, or JSON without separate file requests. The resulting string is about 33% larger than the original binary data.
Common Use Cases
- Embed small images directly in HTML/CSS to reduce HTTP requests
- Include images in email templates without external hosting
- Store images in JSON or XML data structures
- Transfer images through text-only protocols
- Create self-contained HTML files with embedded assets
Output Format Reference
| Format | Example | Usage |
|---|---|---|
| Raw Base64 | iVBORw0KGgoAAAANS... | API requests, database storage, custom processing |
| Data URI | data:image/png;base64,iV... | JavaScript image sources, dynamic image loading |
| HTML <img> Tag | <img src="data:..."> | Direct embed in HTML documents |
| CSS Background | background-image: url(data:...); | Background images in stylesheets |
Tips & Best Practices
- Use Base64 encoding for small images (under 10KB) for best performance
- For larger images, regular file hosting is usually more efficient
- SVG images often compress better than raster formats when Base64 encoded
- Consider browser caching - Base64 images cannot be cached separately