Image to Base64 Converter
Convert your images to Base64 strings for embedding in CSS, HTML, or JavaScript. Or decode Base64 strings back to images.
Upload an image to convert it to Base64
Supported formats: JPG, PNG, GIF, SVG, WebP
About Base64 Image Encoding
Understanding image encoding and use cases
What is Base64 Image Encoding?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. When images are converted to Base64, they can be embedded directly into HTML, CSS, or JavaScript files without requiring a separate image file.
Common Use Cases
- Embedding images directly in HTML documents
- Including small icons in CSS files
- Sending images in JSON responses
- Email templates where external images might be blocked
- Reducing HTTP requests for small images
- Creating single-file HTML applications
How to Use Base64 Images
You can use Base64 encoded images in your HTML, CSS, or JavaScript:
<img src="data:image/png;base64,iVBORw0KGg..." />
.element { background-image: url(data:image/png;base64,iVBORw0KGg...); }
const imgSrc = 'data:image/png;base64,iVBORw0KGg...';
Advantages and Disadvantages
Advantages:
- Reduces HTTP requests
- Works offline
- No external dependencies
- Cannot be blocked by content filters
- No cross-origin issues
Disadvantages:
- ~33% larger file size
- Not cached separately by browsers
- Increases HTML/CSS/JS file size
- Slower parsing for large images
- Makes code less readable