Image to Base64: What It Is and How to Convert

Base64 encoding turns your image into a plain-text string you can paste directly into code. No separate file needed.

What Is Base64?

Base64 is a way to represent binary data (like an image) using only text characters. When used with images, it looks like this:

data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA...

The result is called a data URI, and browsers can display it just like any image.

When Is Base64 Useful?

• Emails — embed logos so they never break
• HTML single-file pages — ship one HTML file with all images inside
• CSS — background images without extra HTTP requests
• JSON — send images through APIs without file uploads
• Favicons — small icons inline

When Should You NOT Use Base64?

Large images as Base64 are bigger than the original file (about 33% overhead). Use it for small icons and logos — not for 5 MB photos.

How to Convert an Image to Base64 Online

1. Open our **Image to Base64 tool**
2. Upload any image (JPG, PNG, WebP, GIF)
3. Click Convert to Base64
4. Copy the result or download it as a .txt file

And that's it. Paste the data URI straight into your HTML <img src="..."> or CSS background-image: url(...) and it just works.

Convert your first image now: Image to Base64