What is Image Base64 Encode?

A tool that converts image files into Base64 text format. Converted images can be embedded directly into HTML or CSS, eliminating the need for external file references.

All processing happens entirely in your browser, so images are never uploaded to any server, ensuring safe usage.

How to Use

Click the "Select File" button or drag and drop images to automatically encode them. Select the desired format (Raw, DataURI, HTML, CSS) and use the copy button to copy the data.

You can convert up to 20 images at once. Large images may take time to process.

Use Cases

• Reduce HTTP requests - Embed small images directly into HTML or CSS to reduce server requests
• API data communication - Exchange images via JSON in REST APIs instead of binary data
• Offline usage - Create self-contained content without external file references

Output Formats

Base64 Data (Raw)

Pure Base64 string without Data URI declaration. Suitable for APIs or custom implementations.

iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAA...

Base64 Data (with DataURI Declaration)

Data URI format that browsers can directly interpret. Starts with the data: scheme and specifies MIME type and Base64 encoding.

data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAA...

HTML img tag

Outputs as an HTML img tag that you can paste directly into web pages.

<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAA..." alt="Base64 Encoded Image">

CSS Background Image

Outputs as a CSS background-image property for use in CSS files or style attributes.

background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAA...');

Image Data Details

Below the encoding results, you'll see a preview of the converted image along with:

• Image Name - Original file name
• Last Modified - File's last update time
• Dimensions - Image resolution (in pixels)
• File Size - Comparison between original size and Base64 converted size

Important Notes

• Base64 encoding increases size by approximately 33%
• Large images may impact performance, making this most suitable for small to medium-sized images
• Very large Base64 strings may not be processable due to browser limitations