Should I convert all my images to Base64?

No! Base64 strings are roughly 33% larger than the original binary image file. You should only encode very small images (like icons or tiny patterns) to save a single HTTP request.

Are my images uploaded to the internet?

No. The conversion happens via the HTML5 FileReader API directly on your local device.

All-in-One Tools100+ Free Online Tools for Creators, Developers & Everyone

Favorites History

Newsletter

Get new tools and SEO tips in your inbox

We send one email per week — no spam, no fluff. Unsubscribe anytime.

Image Tools

Image to Base64 Converter

Convert images (PNG, JPG, SVG) directly to Base64 data URIs for embedding in HTML or CSS.

Last updated July 31, 2026

How to use Image to Base64 Converter

1Drag and drop an image file from your computer into the dropzone.
2Wait a second for the image to process locally.
3Click the 'Copy Base64 String' button to copy the raw Data URI.

Why use this tool

Reduces HTTP requests by embedding small images directly into your CSS or HTML.
Runs completely in the browser — your images are never uploaded to a server.
Supports all modern image formats including WebP, SVG, PNG, and JPEG.

Use cases

Email Templates

Many email clients block external images. Base64 encoded images are embedded directly in the HTML code.

CSS Background Patterns

Embed small SVG or PNG repeating patterns directly in your stylesheet to prevent flash-of-unstyled-content.