Image Data URI Converter — For Developers
Convert images to data URIs for embedding inline in HTML, CSS, or JSON. No server upload required.
Convert images to data URIs for embedding directly in HTML and CSS. Data URIs eliminate extra HTTP requests by inlining image data as Base64 — useful for small icons, logos, and email templates where external image hosting isn't available.
Drop an image to encode
Supports JPG, PNG, WebP, GIF, BMP
How It Works
In encode mode, drop an image file and the tool instantly converts it to a Base64 data URI using the browser's FileReader API. Copy the full data URI (with MIME type prefix) or the raw Base64 string — ready for embedding in HTML, CSS, or JSON.
In decode mode, paste a Base64 string or full data URI and the tool renders the decoded image for preview and download. No server required — everything runs in your browser.
Features
- ✓Two modes: Image → Base64 (encode) and Base64 → Image (decode)
- ✓Copy as full data URI (data:image/png;base64,...) or raw Base64 string
- ✓Supports all common image formats (PNG, JPG, WebP, GIF, BMP, SVG)
- ✓Instant encoding with no processing delay
- ✓Download decoded images as PNG
- ✓Output size indicator shows the Base64 string length
How to Use This Tool
- Choose mode: Encode (Image → Base64) or Decode (Base64 → Image).
- Encode: drop an image file to get the Base64 string instantly. Decode: paste a Base64 string or data URI.
- Copy the output (full data URI or raw Base64) or download the decoded image as PNG.
Perfect For
- →Frontend developers embedding small icons and logos directly in HTML/CSS to reduce HTTP requests
- →Email template designers embedding images inline to ensure display in email clients that block external images
- →API developers encoding image data for JSON payloads in REST APIs
- →DevOps engineers embedding small images in configuration files and markdown documentation
Under the Hood
Encoding uses the FileReader.readAsDataURL() method, which reads the file as a Base64-encoded data URI with the correct MIME type prefix. Decoding creates an Image element from the Base64 string, renders it to a canvas, and exports as a downloadable PNG via canvas.toBlob().