Data URI / Data URL Converter

Convert files and images into inline base64 data: URLs for HTML and CSS embedding.

Processing Architecture: Client-Side (Processed locally in your web browser with zero server uploads)

How to Use Data URI / Data URL Converter

  1. Step 1: Select File

    Upload any image (PNG, JPG, SVG), audio, or font file.

  2. Step 2: Generate Data URI

    View the complete formatted `data:[mime];base64,...` string.

  3. Step 3: Copy Code

    Copy as raw Data URL, HTML `<img>` tag, or CSS `background-image` declaration.

Key Features & Capabilities

  • Auto-detects accurate MIME types (image/png, image/svg+xml, application/font-woff, etc.)
  • Pre-formatted snippets for CSS background and HTML img
  • Calculates payload size overhead (~33% expansion)

Frequently Asked Questions

When should I use Data URIs?

Data URIs are ideal for tiny icons, SVGs, and fonts to eliminate extra HTTP requests and prevent layout shifts.

Does converting to Data URI increase file size?

Base64 encoding introduces approximately a 33% overhead compared to raw binary files.

Related Tools

  • Base64 Encoder / Decoder — Encode and decode text strings, binary data, and files into Base64 format.
  • Image to Base64 — Convert images into Base64 data URI strings for embedding in HTML and CSS.