Base64 Image Encoder
Convert any image to a Base64 encoded string for embedding in code.
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Click or drag an image to upload
What is Base64 Image Encoding?
Base64 encoding converts binary image data into ASCII text. This allows you to embed images directly in HTML, CSS, or JavaScript without requiring separate image files. The encoded string starts with a data URI prefix like "data:image/png;base64,".
Benefits of Base64 Images
- Fewer HTTP Requests: Embedded images don't need separate downloads.
- Self-Contained HTML: Single file with all assets included.
- Email Templates: Images display without external hosting.
- Small Icons: Ideal for tiny images and sprites.
When NOT to Use Base64
- Large Images: Base64 increases file size by ~33%.
- Same Image Multiple Times: Browser can't cache embedded images.
- Performance Critical Apps: Increases initial HTML size.
Copy Options Explained
- Data URI: Full base64 string with prefix. Use in src attributes.
- IMG Tag: Ready-to-use HTML image element.
- CSS URL: For use in background-image properties.
Supported Formats
This tool supports all common image formats including PNG, JPEG, GIF, WebP, SVG, and ICO. The output includes the correct MIME type in the data URI.