Image to Base64 Converter
Turn an image into a Base64 data URI you can paste straight into HTML or CSS, with no separate image file to host.
How to use the Image to Base64 Converter
- Select an image file.
- Copy the generated data URI.
- Paste it into an img src or a CSS background-image url.
About the Image to Base64 Converter
Embedding an image as a data URI removes one network request, which is worth doing for tiny assets like icons and inline SVGs. It is a bad idea for anything large: Base64 inflates the data by about a third and the result cannot be cached separately from the page. A rough rule is to inline under a few kilobytes and link everything bigger.
Frequently asked questions
When should I use a Base64 image?
For very small assets such as icons, where saving a request outweighs the size penalty. Larger images should stay as separate files.
Does Base64 make images bigger?
Yes, by roughly 33%, and the result cannot be cached independently of the page.
Is my image uploaded?
No. Encoding happens in your browser.
Why would I encode an image as Base64?
To embed it directly in HTML or CSS as a data URI, which removes one network request and keeps a small icon inline with the file that uses it. Encode only small images: Base64 makes the data roughly a third larger, so it is a poor trade for photographs.
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Runs entirely in your browser — nothing you enter is uploaded. Last reviewed and updated .