Image to Base64 Encoder — Generate Data URI Online

Image to Base64 converts your image file into a Base64-encoded data URI string that you can embed directly in HTML, CSS, or JSON. This eliminates extra HTTP requests for small images and is essential for offline apps, email templates, and SVG embedding. Paste the output string anywhere code expects an image source.

Why use this Image to Base64?

  • Converts JPG, PNG, WebP, GIF, and SVG to Base64 data URIs
  • One-click copy button to grab the full encoded string instantly
  • Shows the correct data URI prefix (e.g., data:image/png;base64,) automatically
  • Useful for embedding images in HTML, CSS backgrounds, and JSON payloads

How to use the Image to Base64

  1. Upload your image: Select or drag a JPG, PNG, WebP, GIF, or SVG file onto the upload area.
  2. Wait for encoding: The tool encodes your image to Base64 immediately after upload — no extra steps needed.
  3. Copy the data URI: Click the Copy button to copy the full data URI string including the correct MIME-type prefix.
  4. Paste into your code: Use the string as an src attribute in HTML, a url() value in CSS, or a field value in JSON.

Frequently Asked Questions

What is a Base64 data URI and why would I use it?

A Base64 data URI is a text representation of a binary file, prefixed with the file's MIME type. Embedding it directly in code removes the need to host the image as a separate file, which is useful for email HTML, single-file web pages, and reducing small-asset HTTP requests.

Which image formats can I encode?

JPG, PNG, WebP, GIF, and SVG are all supported. The correct MIME type is detected automatically and included in the data URI prefix so you don't have to set it manually.

Will Base64 encoding make my image file larger?

Yes — Base64 encoding increases the data size by approximately 33% compared to the binary file. For large images this can noticeably inflate page weight, so Base64 embedding is best suited for small icons, logos, and UI elements rather than full photographs.

Is the image sent to a server to be encoded?

The image is uploaded to a secure server for processing, and the file is automatically deleted after encoding is complete. The resulting Base64 string is returned to you and nothing is retained.

How do I use the output in CSS?

In a CSS rule, set the background-image property to url('data:image/png;base64,YOUR_STRING_HERE'). Replace the MIME type in the prefix if your image is not a PNG. The browser treats it exactly like a linked image URL.

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