Image to Base64

Convert images to Base64 data URIs — perfect for embedding in code

🔒 Your image never leaves your device. All processing happens locally in your browser using FileReader API. No upload, no server, no tracking.

Features

  • Data URI Output — Get a complete data:image/... URI string ready to paste directly into HTML, CSS, or JavaScript.
  • One-Click Copy — Copy as raw data URI, as an <img> tag, or as a CSS background-image property.
  • Size Comparison — See the original file size vs. the Base64 string length (Base64 is ~33% larger).
  • Instant Conversion — Conversion is immediate — no processing required.

How It Works

  1. Upload your image — Drop any image to convert it to Base64.
  2. Choose copy format — Copy as Data URI, <img> tag, or CSS background-image.
  3. Paste into your code — The Base64 string embeds the image directly in your code — no separate file needed.

Use Cases

  • Embed small images directly in HTML to reduce HTTP requests
  • Inline images in HTML emails that display without external loading
  • CSS background images embedded in stylesheets
  • Bundle icons in JavaScript code for single-file distribution

Frequently Asked Questions

When should I use Base64?

For small images (under 10KB) — icons, logos, tiny UI elements. Embedding avoids extra HTTP requests. For larger images, it's better to serve them as separate files.

Why is the Base64 string larger than the file?

Base64 encoding increases size by ~33% because it converts binary data to ASCII text. This is a trade-off for the ability to embed the image directly in code.

Is the full image quality preserved?

Yes. Base64 is just a different encoding of the exact same binary data — no quality loss whatsoever.

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