Image
Toolin.io

Convert Image to Data URI

Generate data URIs from images for direct embedding in HTML and CSS files. Eliminate extra HTTP requests by inlining small images as data URIs in your web pages and stylesheets.

How to Generate Data URIs

  • Upload the image you want to embed
  • The tool generates the complete data URI string
  • Copy the data URI with the correct MIME type prefix
  • Paste into your HTML img src or CSS background-image

Best Practices for Data URIs

  • Use data URIs for small images under 10KB for best performance
  • Icons, favicons, and small logos are ideal candidates
  • Avoid data URIs for large images as they bloat HTML file size
  • Base64 data URIs increase size by about 33% over the original file

Frequently Asked Questions

When should I use data URIs instead of regular image files?
Use data URIs for small, frequently used images like icons to reduce HTTP requests. For larger images, regular files with caching are more efficient.
Can I use data URIs in CSS?
Yes. Use them in background-image properties: background-image: url(data:image/png;base64,...). This is common for small UI icons.

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This tool runs entirely in your browser. Your files and data never leave your device.

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