Image to Base64
FreeEncode images to Base64 data URIs for embedding in CSS or HTML
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All Image ToolsHow it works
1
Upload
Drop any image file (JPEG, PNG, WebP, SVG, GIF) into the converter.
2
Encode
The image is converted to a Base64 data URI string instantly.
3
Copy
Copy the data URI to use directly in HTML, CSS, or JSON without hosting the file.
Frequently asked questions
What is a Base64 data URI?+
It is a text representation of binary data. A Base64 data URI lets you embed an image directly in HTML or CSS without needing a separate file hosted on a server.
When should I use Base64 images?+
Base64 is useful for small images like icons, logos, or thumbnails where eliminating an extra HTTP request improves page load. Avoid it for large images since the encoded string is about 33% larger than the original file.
Which image formats are supported?+
Any format your browser can read, including JPEG, PNG, WebP, SVG, GIF, and BMP. The output is a standard data URI with the correct MIME type.
Is there a file size limit?+
There is no hard limit, but Base64 encoding increases size by roughly 33%. Images over 100 KB are usually better served as regular files for performance reasons.
Are my images uploaded anywhere?+
No. The encoding runs entirely in your browser. Your files never leave your device.