Image to Base64
Image ToolsConvert images into Base64 data URIs and back.
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What is Image to Base64?
Image to Base64 encodes an image as a Base64 data URI you can embed directly in HTML or CSS.
How to use Image to Base64
- 1 Select an image file.
- 2 Copy the generated data URI.
- 3 Paste it into your markup or stylesheet.
Supported formats and limits
- Input: image file
- Output: Base64 data URI
- Runs in your browser
Common uses
- Inline small icons to reduce HTTP requests.
- Embed an image in a single-file HTML document.
Things to know
- Base64 is about 33% larger than the binary image.
- It is only practical for small images, not photos.
Privacy and file handling
The encoding happens in your browser; the image is not uploaded.
Frequently asked questions
When should I use Base64 images?
Base64 suits small icons and one-off images. Large images bloat HTML and should stay as separate files.
What is a Base64 image used for?
It embeds image data directly in HTML, CSS or JSON so the image loads without a separate file request.
Does Base64 make my image larger?
Yes. Base64 encoding increases size by roughly a third, so it is best for small icons and logos.
Is my image uploaded?
No. Encoding happens in your browser.
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