Image to Base64

Client-Side New

Upload any image and instantly convert it to a Base64-encoded data URI string. Embed small images directly in HTML img tags, CSS background-image properties, or JavaScript code without separate HTTP requests. See the encoded size, copy the full data URI or raw Base64 string. Ideal for icons, thumbnails, and small assets where reducing HTTP requests matters. All conversion happens client-side.

Drop image here or click to browse

Accepts any image format

How to Use

  1. 1

    Upload Image

    Select a PNG, JPG, WebP, GIF, SVG, or ICO file from your device.

  2. 2

    Copy Data URI

    Copy the full data URI string to embed in HTML, CSS, or JavaScript.

  3. 3

    Use Snippets

    Copy the pre-generated HTML img tag or CSS background-image snippet.

Examples by Niche

Inline Icon

Convert a 2KB SVG icon to Base64 data URI for use in CSS background-image

Email Template

Embed small images directly in HTML email templates to avoid broken images

Single-File App

Embed favicon and logo as Base64 in a single-file HTML application

Frequently Asked Questions

When should I use Base64 for images?

Base64 encoding is best for small images (under 10KB) like icons and thumbnails where eliminating an HTTP request improves performance. For larger images, regular file loading is more efficient.

Does Base64 increase file size?

Yes, Base64 encoding increases the data size by approximately 33%. This is why it is recommended only for small images where the trade-off of fewer HTTP requests is worth it.

What image formats can I convert?

You can convert PNG, JPEG, WebP, GIF, SVG, and ICO files to Base64. The data URI includes the correct MIME type for each format.

Does Base64 encoding increase image file size?

Yes, Base64 encoding increases data size by approximately 33% compared to the raw binary. This happens because Base64 represents binary data using only 64 ASCII characters, which is less efficient than binary encoding. For images under 10KB the overhead is negligible, but for larger images a regular file reference is more efficient.

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