Base64 Image Converter
Convert images to Base64 strings for embedding in HTML, CSS, or JSON. Or decode Base64 strings back to viewable images.
Upload or drag & drop images to get Base64 encoded strings
Paste Base64 strings to preview and download images
Upload Image
Drop your image here, or click to browse
Supports PNG, JPG, GIF, WebP, SVG, BMP (max 10MB)
Base64 Output
Usage Examples
<img src="data:image/png; base64,iVBORw..." />
background-image: url( data:image/png; base64,iVBORw... );
{
"image": "iVBORw..."
}Tips & Best Practices
About Base64 Image Converter
Convert images to Base64 encoded strings and decode Base64 back to images with our free online converter. Perfect for embedding images directly in HTML, CSS, JSON, or data URIs. Supports all major image formats including PNG, JPEG, GIF, WebP, and SVG. Drag and drop upload, instant conversion, and easy copy to clipboard.
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme that represents binary data as ASCII text. When you convert an image to Base64, the binary image data is transformed into a string of characters that can be safely included in text-based formats like HTML, CSS, JSON, or email.
Common Use Cases
- Inline Images in HTML - Embed images directly in HTML using data URIs
- CSS Background Images - Include small images directly in CSS files
- API Data Transfer - Send images as part of JSON payloads
- Email Embedding - Include images in email templates
- Reduce HTTP Requests - Fewer server requests for small images
Key Features
- Convert images to Base64 strings
- Decode Base64 back to images
- Drag & drop file upload
- Supports PNG, JPEG, GIF, WebP, SVG
- Auto-detect image format
- Copy to clipboard with one click
Frequently Asked Questions
What image formats are supported?
We support PNG, JPEG/JPG, GIF, WebP, and SVG image formats for both encoding and decoding.
Is there a file size limit?
Since all processing happens in your browser, the limit depends on your device memory. We recommend images under 10MB for best performance.
Can I decode Base64 back to an image?
Yes, our tool works both ways - you can encode images to Base64 and decode Base64 strings back to downloadable images.
Does Base64 increase file size?
Yes, Base64 encoding increases the data size by approximately 33%. This is a trade-off for the convenience of text-based embedding.